Early 20th century
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The 20th (twentieth) century began on January 1, 1901 ( MCMI), and ended on December 31, 2000 ( MM). The 20th century was dominated by significant events that defined the modern era: Spanish flu pandemic, World War I and World War II, nuclear weapons, nuclear power and
space exploration Space exploration is the use of astronomy and space technology to explore outer space. While the exploration of space is carried out mainly by astronomers with telescopes, its physical exploration though is conducted both by robotic spacec ...
, nationalism and decolonization, technological advances, and the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
and post-Cold War conflicts. These reshaped the political and social structure of the globe. The 20th century saw a massive transformation of humanity's relationship with the natural world. Global population, sea level rise, and ecological collapses increased while competition for land and dwindling resources accelerated deforestation, water depletion, and the mass extinction of many of the world's species and decline in the population of others. Global heating increased the risk of extreme weather conditions. Additional themes include intergovernmental organizations and
cultural homogenization Cultural homogenization is an aspect of cultural globalization, listed as one of its main characteristics, and refers to the reduction in cultural diversity through the popularization and diffusion of a wide array of cultural symbols—not only ...
through developments in
emerging ''Emerging'' is the title of the only album by the Phil Keaggy Band, released in 1977 on NewSong Records. The album's release was delayed due to a shift in record pressing plant priorities following the death of Elvis Presley. The album was re ...
transportation and communications technology; poverty reduction and rising standards of living, world population growth, awareness of
environmental degradation Environmental degradation is the deterioration of the environment (biophysical), environment through depletion of resources such as quality of air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; an ...
,
ecological extinction Ecological extinction is "the reduction of a species to such low abundance that, although it is still present in the community, it no longer interacts significantly with other species". Ecological extinction stands out because it is the interacti ...
; Wilson, E.O., ''The Future of Life'' (2002) (). See also: Leakey, Richard, ''The Sixth Extinction : Patterns of Life and the Future of Humankind'', and the birth of the Digital Revolution. Automobiles, airplanes and the use of home appliances became common, as did video and audio recording. Great advances in power generation, communication, and medical technology allowed for near-instantaneous worldwide computer communication and genetic modification of life. The repercussions of the World Wars, Cold War, and globalization crafted a world where people are more united than any previous time in human history, as exemplified by the establishment of international law, international aid, and the United Nations. The Marshall Plan—which spent $13 billion ($ billion in U.S. dollars) to rebuild the economies of post-war nations—launched " Pax Americana". Throughout the latter half of the 20th century, the rivalry between the United States and the Soviet Union created enormous tensions around the world which manifested in various armed proxy regional conflicts and the omnipresent danger of
nuclear proliferation Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as " Nuclear Weapon States" by the Treaty on the Non-Proliferation of Nuclear Wea ...
. The
dissolution of the Soviet Union The dissolution of the Soviet Union, also negatively connoted as rus, Разва́л Сове́тского Сою́за, r=Razvál Sovétskogo Soyúza, ''Ruining of the Soviet Union''. was the process of internal disintegration within the Sov ...
in 1991 after the collapse of its European alliance was heralded by the West as the end of communism, though by the century's end roughly one in six people on Earth lived under communist rule, mostly in China which was rapidly rising as an economic and geopolitical power. It took over two hundred thousand years of modern human history and 6 million years of human evolution for the world's population to reach 1 billion in 1804; world population reached an estimated 2 billion in 1927; by late 2000, the global population reached 6 billion, with over half in East,
South South is one of the cardinal directions or Points of the compass, compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Pro ...
and Southeast Asia. Global literacy averaged 80%.
Penicillin Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from ''Penicillium'' moulds, principally '' P. chrysogenum'' and '' P. rubens''. Most penicillins in clinical use are synthesised by P. chrysogenum using ...
and other medical breakthroughs combined with the World Health Organization's global vaccination campaigns to eradicate smallpox and other diseases responsible for more human deaths than all wars and natural disasters combined yielded unprecedented results; smallpox now only existed in labs. Machines came to be used in all areas of production, feeding increasingly intricate supply chains that allowed mankind for the first time to be constrained not by how much it could produce, but by peoples' willingness to consume. Trade improvements greatly expanded upon the limited set of food-producing techniques used since the Neolithic period, multiplying the diversity of foods available and boosting the quality of human nutrition. Until the early 19th century, life expectancy from birth was about thirty in most populations; global lifespan-averages exceeded 40 years for the first time in history, with over half achieving 70 or more years (three decades ''longer'' than a century earlier).


Overview


Chronological history

The 20th (twentieth) century began on January 1, 1901, and ended on December 31, 2000. It was the tenth and final century of the
2nd millennium File:2nd millennium montage.png, From top left, clockwise: in 1492, Christopher Columbus reaches North America, opening the European colonization of the Americas; the American Revolution, one of the late 1700s Enlightenment-inspired Atlantic Rev ...
. Unlike most century years, the year
2000 File:2000 Events Collage.png, From left, clockwise: Protests against Bush v. Gore after the 2000 United States presidential election; Heads of state meet for the Millennium Summit; The International Space Station in its infant form as seen from ...
was a leap year, and the second century leap year in the Gregorian calendar after
1600 __NOTOC__ In the Gregorian calendar, it was the last century leap year until the year 2000. Events January–June * January 1 – Scotland adopts January 1 as New Year's Day instead of March 25. * January ** Hugh O'Neill, 2nd Earl of T ...
. The century had the first global-scale total wars between world powers across continents and oceans in World War I and World War II. Nationalism became a major political issue in the world in the 20th century, acknowledged in international law along with the right of nations to
self-determination The right of a people to self-determination is a cardinal principle in modern international law (commonly regarded as a ''jus cogens'' rule), binding, as such, on the United Nations as authoritative interpretation of the Charter's norms. It stat ...
, official decolonization in the mid-century, and related regional conflicts. The century saw a major shift in the way that many people lived, with changes in politics, ideology, economics, society, culture, science, technology, and medicine. The 20th century may have seen more technological and scientific progress than all the other centuries combined since the dawn of civilization. Terms like '' nationalism'', ''
globalism Globalism refers to various patterns of meaning beyond the merely international. It is used by political scientists, such as Joseph Nye, to describe "attempts to understand all the interconnections of the modern world—and to highlight patterns ...
'', ''environmentalism'', ''ideology'', '' world war'', '' genocide,'' and ''
nuclear war Nuclear warfare, also known as atomic warfare, is a theoretical military conflict or prepared political strategy that deploys nuclear weaponry. Nuclear weapons are weapons of mass destruction; in contrast to conventional warfare, nuclear w ...
'' entered common usage. Scientific discoveries, such as the theory of relativity and
quantum physics Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, qua ...
, profoundly changed the foundational models of physical science, forcing scientists to realize that the universe was more complex than previously believed, and dashing the hopes (or fears) at the end of the 19th century that the last few details of scientific knowledge were about to be filled in. It was a century that started with horses, simple automobiles, and freighters but ended with
high-speed rail High-speed rail (HSR) is a type of rail system that runs significantly faster than traditional rail, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines ...
, cruise ships, global
commercial air travel Commercial aviation is the part of civil aviation that involves operating aircraft for remuneration or hire, as opposed to private aviation. Definition Commercial aviation is not a rigorously defined category. All commercial air transport and ae ...
and the Space Shuttle. Horses and other pack animals, every society's basic form of personal transportation for thousands of years, were replaced by automobiles and buses within a few decades. These developments were made possible by the exploitation of
fossil fuel A fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. The main fossil fuels are coal, oil, and natural gas. Fossil fuels m ...
resources, which offered energy in an easily portable form, but also caused concern about pollution and long-term impact on the
environment Environment most often refers to: __NOTOC__ * Natural environment, all living and non-living things occurring naturally * Biophysical environment, the physical and biological factors along with their chemical interactions that affect an organism or ...
. Humans explored space for the first time, taking their first footsteps on the Moon. Mass media, telecommunications, and information technology (especially computers, paperback books,
public education State schools (in England, Wales, Australia and New Zealand) or public schools (Scottish English and North American English) are generally primary or secondary schools that educate all students without charge. They are funded in whole or in pa ...
, and the Internet) made the world's knowledge more widely available. Public health improvements led to global life expectancy increasing from 35 years to 65 years. Rapid technological advancements, however, also allowed warfare to reach unprecedented levels of destruction. World War II alone killed over 60 million people, while
nuclear weapons A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb ...
gave humankind the means to annihilate itself in a short time. However, these same wars resulted in the destruction of the imperial system. For the first time in human history, empires and their wars of expansion and colonization ceased to be a factor in international affairs, resulting in a far more globalized and cooperative world. The last time major powers clashed openly was in 1945, and since then, violence has seen an unprecedented decline. The world also became more culturally homogenized than ever with developments in transportation and communications technology, popular music and other influences of Western culture,
international corporations A multinational company (MNC), also referred to as a multinational enterprise (MNE), a transnational enterprise (TNE), a transnational corporation (TNC), an international corporation or a stateless corporation with subtle but contrasting senses, i ...
, and what was arguably a truly
global economy The world economy or global economy is the economy of all humans of the world, referring to the global economic system, which includes all economic activities which are conducted both within and between nations, including production, consumption, ...
by the end of the 20th century.


Summary

At the beginning of the period, the British Empire was the world's most powerful nation, having acted as the world's policeman for the past century. Technological advancements during World War I changed the way war was fought, as new inventions such as tanks, chemical weapons, and aircraft modified tactics and strategy. After more than four years of trench warfare in Western Europe, and up to 22 million dead, the powers that had formed the Triple Entente ( France, Britain, and Russia, later replaced by the United States and joined by Italy and Romania) emerged victorious over the Central Powers ( Germany, Austria-Hungary, the Ottoman Empire and Bulgaria). In addition to annexing many of the colonial possessions of the vanquished states, the Triple Entente exacted punitive restitution payments from them, plunging Germany in particular into
economic depression An economic depression is a period of carried long-term economical downturn that is result of lowered economic activity in one major or more national economies. Economic depression maybe related to one specific country were there is some economic ...
. The Austro-Hungarian and Ottoman empires were dismantled at the war's conclusion. The
Russian Revolution The Russian Revolution was a period of Political revolution (Trotskyism), political and social revolution that took place in the former Russian Empire which began during the First World War. This period saw Russia abolish its monarchy and ad ...
resulted in the overthrow of the
Tsar Tsar ( or ), also spelled ''czar'', ''tzar'', or ''csar'', is a title used by East Slavs, East and South Slavs, South Slavic monarchs. The term is derived from the Latin word ''Caesar (title), caesar'', which was intended to mean "emperor" i ...
ist regime of
Nicholas II Nicholas II or Nikolai II Alexandrovich Romanov; spelled in pre-revolutionary script. ( 186817 July 1918), known in the Russian Orthodox Church as Saint Nicholas the Passion-Bearer,. was the last Emperor of Russia, King of Congress Pola ...
and the onset of the Russian Civil War. The victorious Bolsheviks then established the Soviet Union, the world's first communist state. Fascism, a movement which grew out of post-war angst and which accelerated during the
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
of the 1930s, gained momentum in Italy, Germany, and Spain in the 1920s and 1930s, culminating in World War II, sparked by Nazi Germany's aggressive expansion at the expense of its neighbors. Meanwhile,
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
had rapidly transformed itself into a technologically advanced industrial power and, along with Germany and Italy, formed the Axis powers. Japan's military
expansionism Expansionism refers to states obtaining greater territory through military empire-building or colonialism. In the classical age of conquest moral justification for territorial expansion at the direct expense of another established polity (who of ...
in East Asia and the Pacific Ocean brought it into conflict with the United States, culminating in a surprise attack which drew the US into World War II. After some years of dramatic military success, Germany was defeated in 1945, having been
invaded An invasion is a military offensive in which large numbers of combatants of one geopolitical entity aggressively enter territory owned by another such entity, generally with the objective of either: conquering; liberating or re-establishing con ...
by the Soviet Union and Poland from the East and by the United States, the United Kingdom, Canada, and France from the West. After the victory of the
Allies An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Members of an alliance are called ...
in Europe, the war in Asia ended with the Soviet invasion of Manchuria and the dropping of two atomic bombs on Japan by the US, the first nation to develop
nuclear weapons A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions (thermonuclear bomb), producing a nuclear explosion. Both bomb ...
and the only one to use them in warfare. In total, World War II left some 60 million people dead. Following World War II, the United Nations, successor to the League of Nations, was established as an international forum in which the world's nations could discuss issues diplomatically. It enacted resolutions on such topics as the conduct of warfare, environmental protection, international sovereignty, and human rights.
Peacekeeping Peacekeeping comprises activities intended to create conditions that favour lasting peace. Research generally finds that peacekeeping reduces civilian and battlefield deaths, as well as reduces the risk of renewed warfare. Within the United N ...
forces consisting of troops provided by various countries, with various United Nations and other aid agencies, helped to relieve famine, disease, and poverty, and to suppress some local armed conflicts. Europe slowly united, economically and, in some ways, politically, to form the European Union, which consisted of 15 European countries by the end of the 20th century. After the war, Germany was
occupied ' (Norwegian: ') is a Norwegian political thriller TV series that premiered on TV2 on 5 October 2015. Based on an original idea by Jo Nesbø, the series is co-created with Karianne Lund and Erik Skjoldbjærg. Season 2 premiered on 10 October 2 ...
and divided between the Western powers and the Soviet Union. East Germany and the rest of Eastern Europe became Soviet
puppet states A puppet state, puppet régime, puppet government or dummy government, is a state that is ''de jure'' independent but ''de facto'' completely dependent upon an outside power and subject to its orders.Compare: Puppet states have nominal sovere ...
under communist rule. Western Europe was rebuilt with the aid of the American Marshall Plan, resulting in a major
post-war economic boom In Western usage, the phrase post-war era (or postwar era) usually refers to the time since the end of World War II. More broadly, a post-war period (or postwar period) is the interval immediately following the end of a war. A post-war period c ...
, and many of the affected nations became close allies of the United States. With the Axis defeated and Britain and France rebuilding, the United States and the Soviet Union were left standing as the world's only superpowers. Allies during the war, they soon became hostile to one another as their competing ideologies of communism and
democratic capitalism Democratic capitalism, also referred to as market democracy, is a political and economic system. It integrates resource allocation by marginal productivity (synonymous with free-market capitalism), with policies of resource allocation by social ...
proliferated in Europe, which became divided by the
Iron Curtain The Iron Curtain was the political boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union (USSR) to block itself and its s ...
and the
Berlin Wall The Berlin Wall (german: Berliner Mauer, ) was a guarded concrete barrier that encircled West Berlin from 1961 to 1989, separating it from East Berlin and East Germany (GDR). Construction of the Berlin Wall was commenced by the government ...
. They formed competing military alliances ( NATO and the Warsaw Pact) which engaged in a decades-long standoff known as the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
. The period was marked by a new arms race as the USSR became the second nation to develop nuclear weapons, which were produced by both sides in sufficient numbers to end most human life on the planet had a large-scale nuclear exchange ever occurred. Mutually assured destruction is credited by many historians as having prevented such an exchange, each side being unable to strike first at the other without ensuring an equally devastating retaliatory strike. Unable to engage one another directly, the conflict played out in a series of proxy wars around the world—particularly in
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
, Korea, Cuba, Vietnam, and Afghanistan—as the USSR sought to export communism while the US attempted to contain it. The technological competition between the two sides led to substantial investment in
research and development Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existi ...
which produced innovations that reached far beyond the battlefield, such as
space exploration Space exploration is the use of astronomy and space technology to explore outer space. While the exploration of space is carried out mainly by astronomers with telescopes, its physical exploration though is conducted both by robotic spacec ...
and the Internet. In the latter half of the century, most of the European-colonized world in Africa and Asia gained independence in a process of decolonization. Meanwhile, globalization opened the door for several nations to exert a strong influence over many world affairs. The US's global military presence spread American culture around the world with the advent of the Hollywood motion picture industry and Broadway, jazz, rock music, and pop music, fast food and hippy counterculture, hip-hop,
house music House is a music genre characterized by a repetitive Four on the floor (music), four-on-the-floor beat and a typical tempo of 120 beats per minute. It was created by Disc jockey, DJs and music producers from Chicago metropolitan area, Chicago' ...
, and
disco Disco is a genre of dance music and a subculture that emerged in the 1970s from the United States' urban nightlife scene. Its sound is typified by four-on-the-floor beats, syncopated basslines, string sections, brass and horns, electric pia ...
, as well as
street style Street fashion is fashion that is considered to have emerged not from studios, but from the grassroots streetwear. Street fashion is generally associated with youth culture, and is most often seen in major urban centers. Magazines and Newspapers ...
, all of which came to be identified with the concepts of popular culture and youth culture. After the Soviet Union collapsed under internal pressure in 1991, most of the communist governments it had supported around the world were dismantled—with the notable exceptions of China, North Korea, Cuba, Vietnam, and
Laos Laos (, ''Lāo'' )), officially the Lao People's Democratic Republic ( Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ, French: République démocratique populaire lao), is a socialist ...
—followed by awkward transitions into market economies.


Nature of innovation and change

Due to continuing industrialization and expanding trade, many significant changes of the century were, directly or indirectly, economic and technological in nature. Inventions such as the
light bulb An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic, which secures the lamp in the soc ...
, the automobile, and the telephone in the late 19th century, followed by supertankers,
airliner An airliner is a type of aircraft for transporting passengers and air cargo. Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country, an airliner is typically defined as an ...
s, motorways, radio, television, air conditioning, antibiotics, nuclear power,
frozen food Freezing food preserves it from the time it is prepared to the time it is eaten. Since early times, farmers, fishermen, and trappers have preserved grains and produce in unheated buildings during the winter season. Freezing food slows decompositi ...
,
computers A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These programs ...
and
microcomputer A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor. The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (PC ...
s, the Internet, and
mobile telephone A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive calls over a radio frequency link whil ...
s affected people's quality of life across the developed world. The quantity of goods consumed by the average person expanded massively. Scientific research, engineering professionalization and technological development—much of it motivated by the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
arms race—drove changes in everyday life.


Social change

At the beginning of the century, strong discrimination based on race and sex was significant in most societies. Although the
Atlantic slave trade The Atlantic slave trade, transatlantic slave trade, or Euro-American slave trade involved the transportation by slave traders of enslaved African people, mainly to the Americas. The slave trade regularly used the triangular trade route and i ...
had ended in the 19th century, movements for equality for non-white people in the white-dominated societies of
North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
, Europe, and South Africa continued. By the end of the 20th century, in many parts of the world, women had the same legal rights as men, and racism had come to be seen as unacceptable, a sentiment often backed up by legislation. When the
Republic of India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
was constituted, the disadvantaged classes of the
caste system in India The caste system in India is the paradigmatic ethnographic example of classification of castes. It has its origins in Outline of ancient India, ancient India, and was transformed by various ruling elites in medieval, early-modern, and modern ...
became entitled to affirmative action benefits in education, employment and government. Attitudes toward pre-marital sex changed rapidly in many societies during the
sexual revolution The sexual revolution, also known as the sexual liberation, was a social movement that challenged traditional codes of behavior related to sexuality and interpersonal relationships throughout the United States and the developed world from the 1 ...
of the 1960s and 1970s. Attitudes towards homosexuality also began to change in the later part of the century.


Earth at the end of the 20th century

Economic growth and technological progress had radically altered daily lives. Europe appeared to be at a sustainable peace for the first time in recorded history. The people of the Indian subcontinent, a sixth of the world population at the end of the 20th century, had attained an indigenous independence for the first time in centuries. China, an ancient nation comprising a fifth of the world population, was finally open to the world, creating a new state after the near-complete destruction of the old cultural order. With the end of colonialism and the Cold War, nearly a billion people in Africa were left in new nation states. The world was undergoing its second major period of globalization; the first, which started in the 18th century, having been terminated by World War I. Since the US was in a dominant position, a major part of the process was Americanization. The influence of China and India was also rising, as the world's largest populations were rapidly integrating with the world economy. Terrorism, dictatorship, and the spread of nuclear weapons were pressing global issues. The world was still blighted by small-scale wars and other violent conflicts, fueled by competition over resources and by ethnic conflicts. Disease threatened to destabilize many regions of the world. New viruses such as the West Nile virus continued to spread. Malaria and other diseases affected large populations. Millions were infected with HIV, the virus which causes AIDS. The virus was becoming an epidemic in southern Africa. Based on research done by climate scientists, the majority of the scientific community consider that in the long term environmental problems pose a serious threat. One argument is that of global warming occurring due to human-caused emission of
greenhouse gas A greenhouse gas (GHG or GhG) is a gas that Absorption (electromagnetic radiation), absorbs and Emission (electromagnetic radiation), emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse ...
es, particularly carbon dioxide produced by the burning of
fossil fuel A fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. The main fossil fuels are coal, oil, and natural gas. Fossil fuels m ...
s. This prompted many nations to negotiate and sign the
Kyoto treaty The Kyoto Protocol was an international treaty which extended the 1992 United Nations Framework Convention on Climate Change (UNFCCC) that commits state parties to reduce greenhouse gas emissions, based on the scientific consensus that (part ...
, which set mandatory limits on carbon dioxide emissions. World population increased from about 1.6 billion people in 1901 to 6.1 billion at the century's end.


Wars and politics

The number of people killed during the century by government actions was in the hundreds of millions. This includes deaths caused by wars, genocide, politicide and mass murders. The deaths from acts of war during the two world wars alone have been estimated at between 50 and 80 million. Political scientist
Rudolph Rummel Rudolph Joseph Rummel (October 21, 1932 – March 2, 2014) was an American political scientist and professor at the Indiana University, Yale University, and University of Hawaiʻi. He spent his career studying data on collective violence and war w ...
estimated 262,000,000 deaths caused by
democide Democide is a term coined by American political scientist Rudolph Rummel to describe "the intentional killing of an unarmed or disarmed person by special agent, government agents acting in their authoritative capacity and pursuant to government p ...
, which excludes those killed in war battles, civilians unintentionally killed in war and killings of rioting mobs. According to Charles Tilly, "Altogether, about 100 million people died as a direct result of action by organized military units backed by one government or another over the course of the century. Most likely a comparable number of civilians died of war-induced disease and other indirect effects." It is estimated that approximately 70 million Europeans died through war, violence and famine between 1914 and 1945. * The Armenian, Syriac and Greek genocide were the systematic destruction, mass murder and expulsion of the Armenians,
Assyrians Assyrian may refer to: * Assyrian people, the indigenous ethnic group of Mesopotamia. * Assyria, a major Mesopotamian kingdom and empire. ** Early Assyrian Period ** Old Assyrian Period ** Middle Assyrian Empire ** Neo-Assyrian Empire * Assyrian ...
and Greeks in the Ottoman Empire during World War I, spearheaded by the ruling Committee of Union and Progress (CUP). * Rising nationalism and increasing national awareness were among the many causes of World War I (1914–1918), the first of two wars to involve many major world powers including Germany, France, Italy, Japan, Russia/ USSR, the British Empire and the United States. World War I led to the creation of many new countries, especially in Eastern Europe. At the time, it was said by many to be the "
war to end all wars "The war to end war" (also "The war to end all wars"; originally from the 1914 book '' The War That Will End War'' by H. G. Wells) is a term for the First World War of 1914–1918. Originally an idealistic slogan, it is now mainly used sardonica ...
". * After gaining political rights in the United States and much of Europe in the first part of the century, and with the advent of new
birth control Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unwanted pregnancy. Birth control has been used since ancient times, but effective and safe methods of birth contr ...
techniques, women became more independent throughout the century. *
Industrial warfare Industrial warfare is a period in the history of warfare ranging roughly from the early 19th century and the start of the Industrial Revolution to the beginning of the Atomic Age, which saw the rise of nation-states, capable of creating and equi ...
greatly increased in its scale and complexity during the first half of the 20th century. Notable developments included
chemical warfare Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons. This type of warfare is distinct from nuclear warfare, biological warfare and radiological warfare, which together make up CBRN, the military acronym ...
, the introduction of
military aviation Military aviation comprises military aircraft and other flying machines for the purposes of conducting or enabling aerial warfare, including national airlift ( air cargo) capacity to provide logistical supply to forces stationed in a war the ...
and the widespread use of
submarines A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely o ...
. The introduction of nuclear warfare in the mid-20th century marked the definite transition to modern warfare. * Civil wars occurred in many nations. A violent civil war broke out in Spain in 1936 when General
Francisco Franco Francisco Franco Bahamonde (; 4 December 1892 – 20 November 1975) was a Spanish general who led the Nationalist faction (Spanish Civil War), Nationalist forces in overthrowing the Second Spanish Republic during the Spanish Civil War ...
rebelled against the Second Spanish Republic. Many consider this war as a testing battleground for World War II, as the fascist armies bombed some Spanish territories. * The
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
in the 1930s led to the rise of Fascism and Nazism in Europe. * World War II (1939–1945) involved Eastern Asia and the Pacific, in the form of Japanese aggression against
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...
and the United States. Civilians also suffered greatly in World War II, due to the aerial bombing of cities on both sides, and the German genocide of the Jews and others, known as the Holocaust. * During World War I, in the
Russian Revolution The Russian Revolution was a period of Political revolution (Trotskyism), political and social revolution that took place in the former Russian Empire which began during the First World War. This period saw Russia abolish its monarchy and ad ...
of 1917, 300 years of Romanov reign were ended and the Bolsheviks, under the leadership of Vladimir Lenin, established the world's first Communist state. After the Soviet Union's involvement in World War II, communism became a major force in global politics, notably in Eastern Europe, China, Indochina and Cuba, where communist parties gained near-absolute power. * The Cold War (1947–1989) involved an
arms race An arms race occurs when two or more groups compete in military superiority. It consists of a competition between two or more states to have superior armed forces; a competition concerning production of weapons, the growth of a military, and t ...
and increasing competition between the two major players in the world: the Soviet Union and the United States. This competition included the development and improvement of nuclear weapons and the Space Race. This led to the proxy wars with the Western bloc, including wars in Korea (1950–1953) and Vietnam (1957–1975). * The Soviet authorities caused the deaths of millions of their own citizens to eliminate domestic opposition. More than 18 million people passed through the Gulag, with a further 6 million being
exiled ''Exiled'' () is a 2006 Hong Kong action drama film produced and directed by Johnnie To, and starring Anthony Wong, Francis Ng, Nick Cheung, Josie Ho, Roy Cheung and Lam Suet, with special appearances by Richie Jen and Simon Yam. The action ta ...
to remote areas of the Soviet Union. * The civil rights movement in the United States and the movement against apartheid in South Africa challenged racial segregation in those countries. * The two world wars led to efforts to increase
international cooperation In international relations, multilateralism refers to an alliance of multiple countries pursuing a common goal. Definitions Multilateralism, in the form of membership in international institutions, serves to bind powerful nations, discourage u ...
, notably through the founding of the League of Nations after World War I, and its successor, the United Nations, after World War II. *
Nationalist movements Nationalism is an idea and movement that holds that the nation should be congruent with the State (polity), state. As a movement, nationalism tends to promote the interests of a particular nation (as in a in-group and out-group, group of peo ...
in the subcontinent led to the independence and partition of Jawaharlal Nehru-led India and
Muhammad Ali Jinnah Muhammad Ali Jinnah (, ; born Mahomedali Jinnahbhai; 25 December 1876 – 11 September 1948) was a barrister, politician, and the founder of Pakistan. Jinnah served as the leader of the All-India Muslim League from 1913 until the ...
-led Pakistan. * Mahatma Gandhi's
nonviolence Nonviolence is the personal practice of not causing harm to others under any condition. It may come from the belief that hurting people, animals and/or the environment is unnecessary to achieve an outcome and it may refer to a general philosoph ...
and Indian independence movement against the British Empire influenced many
political movement A political movement is a collective attempt by a group of people to change government policy or social values. Political movements are usually in opposition to an element of the status quo, and are often associated with a certain ideology. Some t ...
s around the world, including the civil rights movement in the U.S., and freedom movements in South Africa and Burma. * The
creation Creation may refer to: Religion *''Creatio ex nihilo'', the concept that matter was created by God out of nothing * Creation myth, a religious story of the origin of the world and how people first came to inhabit it * Creationism, the belief tha ...
of Israel in 1948, a Jewish state in the Middle East, at the end of the British Mandate for Palestine, fueled many regional conflicts. These were also influenced by the vast
oil field A petroleum reservoir or oil and gas reservoir is a subsurface accumulation of hydrocarbons contained in porous or fractured rock formations. Such reservoirs form when kerogen (ancient plant matter) is created in surrounding rock by the presence ...
s in many of the other countries of the predominantly Arab region. * The end of colonialism led to the independence of many African and Asian countries. During the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
, many of these aligned with the United States, the USSR, or China for defense. * After a long period of civil wars and conflicts with western powers, China's last imperial dynasty ended in 1912. The resulting
republic A republic () is a "state in which power rests with the people or their representatives; specifically a state without a monarchy" and also a "government, or system of government, of such a state." Previously, especially in the 17th and 18th c ...
was replaced, after another civil war, by a communist People's Republic in 1949. At the end of the 20th century, though still ruled by a communist party, China's economic system had largely transformed to capitalism. * The
Great Chinese Famine The Great Chinese Famine () was a period between 1959 and 1961 in the history of the People's Republic of China (PRC) characterized by widespread famine. Some scholars have also included the years 1958 or 1962. It is widely regarded as the dead ...
was a direct cause of the death of tens of millions of Chinese peasants between 1959 and 1962. It is thought to be the largest
famine A famine is a widespread scarcity of food, caused by several factors including war, natural disasters, crop failure, Demographic trap, population imbalance, widespread poverty, an Financial crisis, economic catastrophe or government policies. Th ...
in
human history Human history, also called world history, is the narrative of humanity's past. It is understood and studied through anthropology, archaeology, genetics, and linguistics. Since the invention of writing, human history has been studied throug ...
.China's great famine: 40 years later
. ''
British Medical Journal ''The BMJ'' is a weekly peer-reviewed medical trade journal, published by the trade union the British Medical Association (BMA). ''The BMJ'' has editorial freedom from the BMA. It is one of the world's oldest general medical journals. Origi ...
'' 1999;319:1619–1621 (December 18 )
* The Vietnam War caused two million deaths, changed the dynamics between the Eastern and Western Blocs, and altered global North-South relations. * The Soviet War in Afghanistan caused one million deaths and contributed to the downfall of the Soviet Union. * The revolutions of 1989 released Eastern and Central Europe from Soviet supremacy. Soon thereafter, the Soviet Union, Czechoslovakia, and Yugoslavia dissolved, the latter violently over several years, into successor states, many rife with ethnic nationalism. Meanwhile, East Germany and West Germany were reunified in 1990. * The Tiananmen Square protests of 1989, culminating in the deaths of hundreds of civilian protesters, were a series of demonstrations in and near Tiananmen Square in Beijing, China. Led mainly by students and intellectuals, the protests occurred in a year that saw the collapse of a number of communist governments around the world. *
European integration European integration is the process of industrial, economic integration, economic, political, legal, social integration, social, and cultural Regional integration, integration of states wholly or partially in Europe or nearby. European integrat ...
began in earnest in the 1950s, and eventually led to the European Union, a political and economic union that comprised 15 countries at the end of the 20th century.


Culture and entertainment

* As the century began, Paris was the artistic capital of the world, where both French and foreign writers, composers and visual artists gathered. By the middle of the century New York City had become the artistic capital of the world. * Theater, films, music and the media had a major influence on fashion and trends in all aspects of life. As many films and much music originate from the United States, American culture spread rapidly over the world. * 1953 saw the coronation of Queen Elizabeth II, an iconic figure of the century. * Visual culture became more dominant not only in films but in comics and television as well. During the century a new skilled understanding of narrativist imagery was developed. * Computer games and internet surfing became new and popular form of entertainment during the last 25 years of the century. * In literature, science fiction, fantasy (with well-developed fictional worlds, rich in detail), and alternative history fiction gained popularity.
Detective fiction Detective fiction is a subgenre of crime fiction and mystery fiction in which an investigator or a detective—whether professional, amateur or retired—investigates a crime, often murder. The detective genre began around the same time as s ...
gained popularity in the
interwar period In the history of the 20th century, the interwar period lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days), the end of the World War I, First World War to the beginning of the World War II, Second World War. The in ...
. In the United States in 1961
Grove Press Grove Press is an United States of America, American Imprint (trade name), publishing imprint that was founded in 1947. Imprints include: Black Cat, Evergreen, Venus Library, and Zebra. Barney Rosset purchased the company in 1951 and turned it in ...
published '' Tropic of Cancer'' a novel by Henry Miller redefining pornography and censorship in publishing in America.


Music

The invention of music recording technologies such as the
phonograph record A phonograph record (also known as a gramophone record, especially in British English), or simply a record, is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts nea ...
, and dissemination technologies such as radio broadcasting, massively expanded the audience for music. Prior to the 20th century, music was generally only experienced in
live performances ''Live Performance'' is a live album by Jake Thackray. Recorded at the Queen Elizabeth Hall in London in 1970, it was released on LP by EMI in 1971 and reissued in 1976. An expanded version was released on CD in 2006. Thackray was uncomforta ...
. Many new genres of music were established during the 20th century. *
Igor Stravinsky Igor Fyodorovich Stravinsky (6 April 1971) was a Russian composer, pianist and conductor, later of French (from 1934) and American (from 1945) citizenship. He is widely considered one of the most important and influential composers of the ...
revolutionized classical composition. * In the 1920s,
Arnold Schoenberg Arnold Schoenberg or Schönberg (, ; ; 13 September 187413 July 1951) was an Austrian-American composer, music theorist, teacher, writer, and painter. He is widely considered one of the most influential composers of the 20th century. He was as ...
developed the twelve-tone technique, which became widely influential on 20th-century composers. * In classical music, composition branched out into many completely new domains, including
dodecaphony The twelve-tone technique—also known as dodecaphony, twelve-tone serialism, and (in British usage) twelve-note composition—is a method of musical composition first devised by Austrian composer Josef Matthias Hauer, who published his "law o ...
,
aleatoric Aleatoricism or aleatorism, the noun associated with the adjectival aleatory and aleatoric, is a term popularised by the musical composer Pierre Boulez, but also Witold Lutosławski and Franco Evangelisti, for compositions resulting from "action ...
(chance) music, and
minimalism In visual arts, music and other media, minimalism is an art movement that began in post–World War II in Western art, most strongly with American visual arts in the 1960s and early 1970s. Prominent artists associated with minimalism include Don ...
. * Tango was created in Argentina and became extremely popular in the rest of the Americas and Europe. *
Blues Blues is a music genre and musical form which originated in the Deep South of the United States around the 1860s. Blues incorporated spirituals, work songs, field hollers, shouts, chants, and rhymed simple narrative ballads from the Afr ...
and jazz music became popularized during the 1910s, 1920s and 1930s in the United States. Bebop develops as a form of jazz in the 1940s. * Country music develops in the 1920s and 1930s in the United States. * Blues and country went on to influence rock and roll in the 1950s, which along with folk music, increased in popularity with the British Invasion of the mid-to-late 1960s. * Rock soon branched into many different genres, including folk rock, heavy metal, punk rock, and alternative rock and became the dominant genre of popular music. * This was challenged with the rise of hip hop in the 1980s and 1990s. * Other genres such as
house A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air condi ...
, techno, reggae, and soul all developed during the latter half of the century and went through various periods of popularity. * Synthesizers began to be employed widely in music and crossed over into the mainstream with new wave music in the 1980s. Electronic instruments have been widely deployed in all manners of popular music and has led to the development of such genres as
house A house is a single-unit residential building. It may range in complexity from a rudimentary hut to a complex structure of wood, masonry, concrete or other material, outfitted with plumbing, electrical, and heating, ventilation, and air condi ...
,
synth-pop Synth-pop (short for synthesizer pop; also called techno-pop; ) is a subgenre of new wave music that first became prominent in the late 1970s and features the synthesizer as the dominant musical instrument. It was prefigured in the 1960s ...
, electronic dance music, and
industrial Industrial may refer to: Industry * Industrial archaeology, the study of the history of the industry * Industrial engineering, engineering dealing with the optimization of complex industrial processes or systems * Industrial city, a city dominate ...
.


Film, television and theatre

Film as an artistic medium was created in the 20th century. The first modern movie theatre was established in Pittsburgh in 1905.
Hollywood Hollywood usually refers to: * Hollywood, Los Angeles, a neighborhood in California * Hollywood, a metonym for the cinema of the United States Hollywood may also refer to: Places United States * Hollywood District (disambiguation) * Hollywood, ...
developed as the center of American film production. While the first films were in black and white, technicolor was developed in the 1920s to allow for color films. Sound films were developed, with the first full-length feature film, '' The Jazz Singer'', released in 1927. The Academy Awards were established in 1929. Animation was also developed in the 1920s, with the first full-length
cel animated Traditional animation (or classical animation, cel animation, or hand-drawn animation) is an animation technique in which each frame is drawn by hand. The technique was the dominant form of animation in cinema until computer animation. Proce ...
feature film ''
Snow White and the Seven Dwarfs "Snow White and the Seven Dwarfs" is a 19th-century German fairy tale that is today known widely across the Western world. The Brothers Grimm published it in 1812 in the first edition of their collection ''Grimms' Fairy Tales'' and numbered as Ta ...
'', released in 1937.
Computer-generated imagery Computer-generated imagery (CGI) is the use of computer graphics to create or contribute to images in art, printed media, video games, simulators, and visual effects in films, television programs, shorts, commercials, and videos. The images may ...
was developed in the 1980s, with the first full-length CGI-animated film '' Toy Story'' released in 1995. *
Julie Andrews Dame Julie Andrews (born Julia Elizabeth Wells; 1 October 1935) is an English actress, singer, and author. She has garnered numerous accolades throughout her career spanning over seven decades, including an Academy Award, a British Academy Fi ...
, Harry Belafonte,
Humphrey Bogart Humphrey DeForest Bogart (; December 25, 1899 – January 14, 1957), nicknamed Bogie, was an American film and stage actor. His performances in Classical Hollywood cinema films made him an American cultural icon. In 1999, the American Film In ...
,
Marlon Brando Marlon Brando Jr. (April 3, 1924 – July 1, 2004) was an American actor. Considered one of the most influential actors of the 20th century, he received numerous accolades throughout his career, which spanned six decades, including two Academ ...
,
James Cagney James Francis Cagney Jr. (; July 17, 1899March 30, 1986) was an American actor, dancer and film director. On stage and in film, Cagney was known for his consistently energetic performances, distinctive vocal style, and deadpan comic timing. He ...
,
Charlie Chaplin Sir Charles Spencer Chaplin Jr. (16 April 188925 December 1977) was an English comic actor, filmmaker, and composer who rose to fame in the era of silent film. He became a worldwide icon through his screen persona, the Tramp, and is consider ...
,
Sean Connery Sir Sean Connery (born Thomas Connery; 25 August 1930 – 31 October 2020) was a Scottish actor. He was the first actor to portray fictional British secret agent James Bond on film, starring in seven Bond films between 1962 and 1983. Origina ...
, Tom Cruise,
James Dean James Byron Dean (February 8, 1931September 30, 1955) was an American actor. He is remembered as a cultural icon of teenage disillusionment and social estrangement, as expressed in the title of his most celebrated film, ''Rebel Without a Cause' ...
,
Robert De Niro Robert Anthony De Niro Jr. ( , ; born August 17, 1943) is an American actor. Known for his collaborations with Martin Scorsese, he is considered to be one of the best actors of his generation. De Niro is the recipient of various accolades ...
,
Harrison Ford Harrison Ford (born July 13, 1942) is an American actor. His films have grossed more than $5.4billion in North America and more than $9.3billion worldwide, making him the seventh-highest-grossing actor in North America. He is the recipient o ...
, Clark Gable, Cary Grant,
Audrey Hepburn Audrey Hepburn (born Audrey Kathleen Ruston; 4 May 1929 – 20 January 1993) was a British actress and humanitarian. Recognised as both a film and fashion icon, she was ranked by the American Film Institute as the AFI's 100 Years...100 Stars, t ...
,
Katharine Hepburn Katharine Houghton Hepburn (May 12, 1907 – June 29, 2003) was an American actress in film, stage, and television. Her career as a Hollywood leading lady spanned over 60 years. She was known for her headstrong independence, spirited perso ...
,
Bruce Lee Bruce Lee (; born Lee Jun-fan, ; November 27, 1940 – July 20, 1973) was a Hong Kong and American martial artist and actor. He was the founder of Jeet Kune Do, a hybrid martial arts philosophy drawing from different combat disciplines that ...
, Marilyn Monroe,
Paul Newman Paul Leonard Newman (January 26, 1925 – September 26, 2008) was an American actor, film director, race car driver, philanthropist, and entrepreneur. He was the recipient of numerous awards, including an Academy Award, a BAFTA Award, three ...
, Jack Nicholson,
Al Pacino Alfredo James Pacino (; ; born April 25, 1940) is an American actor. Considered one of the most influential actors of the 20th century, he has received numerous accolades: including an Academy Award, two Tony Awards, and two Primetime Emmy ...
,
Sidney Poitier Sidney Poitier ( ; February 20, 1927 – January 6, 2022) was an American actor, film director, and diplomat. In 1964, he was the first black actor and first Bahamian to win the Academy Award for Best Actor. He received two competitive ...
, Meryl Streep,
Elizabeth Taylor Dame Elizabeth Rosemond Taylor (February 27, 1932 – March 23, 2011) was a British-American actress. She began her career as a child actress in the early 1940s and was one of the most popular stars of classical Hollywood cinema in the 1950s. ...
,
James Stewart James Maitland Stewart (May 20, 1908 – July 2, 1997) was an American actor and military pilot. Known for his distinctive drawl and everyman screen persona, Stewart's film career spanned 80 films from 1935 to 1991. With the strong morality h ...
,
Jane Fonda Jane Seymour Fonda (born December 21, 1937) is an American actress, activist, and former fashion model. Recognized as a film icon, Fonda is the recipient of various accolades including two Academy Awards, two British Academy Film Awards, sev ...
and
John Wayne Marion Robert Morrison (May 26, 1907 – June 11, 1979), known professionally as John Wayne and nicknamed The Duke or Duke Wayne, was an American actor who became a popular icon through his starring roles in films made during Hollywood's Gol ...
are among the most popular
Hollywood Hollywood usually refers to: * Hollywood, Los Angeles, a neighborhood in California * Hollywood, a metonym for the cinema of the United States Hollywood may also refer to: Places United States * Hollywood District (disambiguation) * Hollywood, ...
stars of the 20th century. * Madhubala,
Jean-Paul Belmondo Jean-Paul Charles Belmondo (; 9 April 19336 September 2021) was a French actor and producer. Initially associated with the New Wave of the 1960s, he was a major French film star for several decades from the 1960s onward. His best known credits ...
, Karel Roden,
Sean Connery Sir Sean Connery (born Thomas Connery; 25 August 1930 – 31 October 2020) was a Scottish actor. He was the first actor to portray fictional British secret agent James Bond on film, starring in seven Bond films between 1962 and 1983. Origina ...
,
Marcello Mastroianni Marcello Vincenzo Domenico Mastroianni (28 September 1924 – 19 December 1996) was an Italian film actor, regarded as one of his country's most iconic male performers of the 20th century. He played leading roles for many of Italy's top di ...
, Salah Zulfikar, Marlene Dietrich, Brigitte Bardot,
Omar Sharif Omar Sharif ( ar, عمر الشريف ; born Michel Yusef Dimitri Chalhoub , 10 April 193210 July 2015) was an Egyptian actor, generally regarded as one of his country's greatest male film stars. He began his career in his native country in the ...
, Catherine Deneuve,
Alain Delon Alain Fabien Maurice Marcel Delon (; born 8 November 1935) is a French actor and filmmaker. He was one of Europe's most prominent actors and screen sex symbols in the 1960s, 1970s and 1980s. In 1985, he won the César Award for Best Actor for h ...
, Soad Hosny,
Fernanda Montenegro Arlette Pinheiro Esteves Torres ONM (née da Silva; born 16 October 1929), known by her stage name Fernanda Montenegro ( /feʁˈnɐ̃dɐ mõtʃiˈnegɾu/), is a Brazilian stage, television and film actress. Considered by many the greatest Brazil ...
,
Sophie Marceau Sophie Marceau (; born Sophie Danièle Sylvie Maupu, 17 November 1966) is a French actress. As a teenager, she achieved popularity with her debut films ''La Boum'' (1980) and ''La Boum 2'' (1982), receiving a César Award for Most Promising Act ...
, Fatima Rushdi,
Amitabh Bachchan Amitabh Bachchan (; born as Amitabh Shrivastav; 11 October 1942) is an Indian actor, film producer, television host, occasional playback singer and former politician known for his work in Hindi cinema. He is regarded as one of the most succe ...
, Jean Gabin,
Toshiro Mifune was a Japanese actor who appeared in over 150 feature films. He is best known for his 16-film collaboration (1948–1965) with Akira Kurosawa in such works as ''Rashomon'', ''Seven Samurai'', ''The Hidden Fortress'', ''Throne of Blood'', and '' ...
, Shoukry Sarhan, Lars Mikkelsen,
Sophia Loren Sofia Costanza Brigida Villani Scicolone (; born 20 September 1934), known professionally as Sophia Loren ( , ), is an Italian actress. She was named by the American Film Institute as one of the greatest female stars of Classical Hollywood ci ...
, Youssef Wahbi, Claudia Cardinale,
Klaus Kinski Klaus Kinski (, born Klaus Günter Karl Nakszynski 18 October 1926 – 23 November 1991) was a German actor, equally renowned for his intense performance style and notorious for his volatile personality. He appeared in over 130 film roles in a c ...
,
Gérard Depardieu Gérard Xavier Marcel Depardieu, CQ (, , ; born 27 December 1948) is a French actor, filmmaker, businessman and vineyard owner since 1989 who is one of the most prolific thespians in film history having completed over 250 films since 1967 alm ...
, Max von Sydow, Faten Hamama, Rutger Hauer and
Toni Servillo Marco Antonio Servillo (), known as Toni Servillo, is an Italian actor and theatrical director. He has won the European Film Award for Best Actor twice, in 2008 for both '' Gomorrah'' and ''Il Divo'' and in 2013 for ''The Great Beauty'', as well ...
are among the most popular movie stars of the 20th century. * Sergei Eisenstein,
D. W. Griffith David Wark Griffith (January 22, 1875 – July 23, 1948) was an American film director. Considered one of the most influential figures in the history of the motion picture, he pioneered many aspects of film editing and expanded the art of the na ...
, Cecil B. DeMille,
Frank Capra Frank Russell Capra (born Francesco Rosario Capra; May 18, 1897 – September 3, 1991) was an Italian-born American film director, producer and writer who became the creative force behind some of the major award-winning films of the 1930s ...
,
Howard Hawks Howard Winchester Hawks (May 30, 1896December 26, 1977) was an American film director, producer and screenwriter of the classic Hollywood era. Critic Leonard Maltin called him "the greatest American director who is not a household name." A v ...
, John Ford, Orson Welles, Martin Scorsese,
John Huston John Marcellus Huston ( ; August 5, 1906 – August 28, 1987) was an American film director, screenwriter, actor and visual artist. He wrote the screenplays for most of the 37 feature films he directed, many of which are today considered ...
,
Alfred Hitchcock Sir Alfred Joseph Hitchcock (13 August 1899 – 29 April 1980) was an English filmmaker. He is widely regarded as one of the most influential figures in the history of cinema. In a career spanning six decades, he directed over 50 featur ...
, Akira Kurosawa, Spike Lee,
Ingmar Bergman Ernst Ingmar Bergman (14 July 1918 – 30 July 2007) was a Swedish film director, screenwriter, Film producer, producer and playwright. Widely considered one of the greatest and most influential filmmakers of all time, his films are known ...
,
Federico Fellini Federico Fellini (; 20 January 1920 – 31 October 1993) was an Italian film director and screenwriter known for his distinctive style, which blends fantasy and baroque images with earthiness. He is recognized as one of the greatest and most i ...
, Walt Disney,
Stanley Kubrick Stanley Kubrick (; July 26, 1928 – March 7, 1999) was an American film director, producer, screenwriter, and photographer. Widely considered one of the greatest filmmakers of all time, his films, almost all of which are adaptations of nove ...
,
Steven Spielberg Steven Allan Spielberg (; born December 18, 1946) is an American director, writer, and producer. A major figure of the New Hollywood era and pioneer of the modern blockbuster, he is the most commercially successful director of all time. Spie ...
,
Ridley Scott Sir Ridley Scott (born 30 November 1937) is a British film director and producer. Directing, among others, science fiction films, his work is known for its atmospheric and highly concentrated visual style. Scott has received many accolades thr ...
, Woody Allen, Quentin Tarantino,
James Cameron James Francis Cameron (born August 16, 1954) is a Canadian filmmaker. A major figure in the post-New Hollywood era, he is considered one of the industry's most innovative filmmakers, regularly pushing the boundaries of cinematic capability w ...
, William Friedkin, Ezz El-Dine Zulficar and
George Lucas George Walton Lucas Jr. (born May 14, 1944) is an American filmmaker. Lucas is best known for creating the ''Star Wars'' and ''Indiana Jones'' franchises and founding Lucasfilm, LucasArts, Industrial Light & Magic and THX. He served as chairm ...
are among the most important and popular filmmakers of the 20th century. * In theater, sometimes referred to as Broadway in New York City, playwrights such as Eugene O'Neill,
Samuel Beckett Samuel Barclay Beckett (; 13 April 1906 – 22 December 1989) was an Irish novelist, dramatist, short story writer, theatre director, poet, and literary translator. His literary and theatrical work features bleak, impersonal and tragicomic expe ...
,
Edward Albee Edward Franklin Albee III ( ; March 12, 1928 – September 16, 2016) was an American playwright known for works such as ''The Zoo Story'' (1958), '' The Sandbox'' (1959), ''Who's Afraid of Virginia Woolf?'' (1962), '' A Delicate Balance'' (1966) ...
, Arthur Miller and Tennessee Williams introduced innovative language and ideas to the idiom. In musical theater, figures such as Rodgers and Hammerstein, Lerner and Loewe, Mohammed Karim, and Irving Berlin had an enormous impact on both film and the culture in general. * Modern dance is born in America as a 'rebellion' against centuries-old European ballet.
Dancers Dance is a performing art form consisting of sequences of movement, either improvised or purposefully selected. This movement has aesthetic and often symbolic value. Dance can be categorized and described by its choreography, by its repertoire ...
and choreographers Alvin Ailey, Isadora Duncan, Vaslav Nijinsky,
Ruth St. Denis Ruth St. Denis (born Ruth Denis; January 20, 1879 – July 21, 1968) was an American pioneer of modern dance, introducing eastern ideas into the art. She was the co-founder of the American Denishawn School of Dancing and Related Arts and the teac ...
, Mahmoud Reda,
Martha Graham Martha Graham (May 11, 1894 – April 1, 1991) was an American modern dancer and choreographer. Her style, the Graham technique, reshaped American dance and is still taught worldwide. Graham danced and taught for over seventy years. She wa ...
, José Limón, Doris Humphrey, Merce Cunningham, and Paul Taylor re-defined movement, struggling to bring it back to its 'natural' roots and along with Jazz, created a solely American art form. Alvin Ailey is credited with popularizing modern dance and revolutionizing African-American participation in 20th-century concert dance. His company gained the nickname "Cultural Ambassador to the World" because of its extensive international touring. Ailey's choreographic masterpiece Revelations is believed to be the best known and most often seen modern dance performance.


Video games

Video games—due to the great technological steps forward in computing since the second
post-war In Western usage, the phrase post-war era (or postwar era) usually refers to the time since the end of World War II. More broadly, a post-war period (or postwar period) is the interval immediately following the end of a war. A post-war period c ...
period—are one of the new forms of entertainment that emerged in the 20th century alongside films. * While already conceptualized in the
1940s File:1940s decade montage.png, Above title bar: events during World War II (1939–1945): From left to right: Troops in an LCVP landing craft approaching Omaha Beach on D-Day; Adolf Hitler visits Paris, soon after the Battle of France; The Holoca ...
50s The 50s decade ran from January 1, 50, to December 31, 59. It was the sixth decade in the Anno Domini/Common Era, if the nine-year period from 1 AD to 9 AD is considered as a "decade". Significant people * Claudius, Roman Emperor (AD 41 ...
, video games only emerged as an industry during the
1970s File:1970s decade montage.jpg, Clockwise from top left: U.S. President Richard Nixon doing the V for Victory sign after his resignation from office following the Watergate scandal in 1974; The United States was still involved in the Vietnam War i ...
, and then exploded into social and cultural phenomena such as the golden age of arcade video games, with notable releases such as Taito's '' Space Invaders'',
Atari Atari () is a brand name that has been owned by several entities since its inception in 1972. It is currently owned by French publisher Atari SA through a subsidiary named Atari Interactive. The original Atari, Inc. (1972–1992), Atari, Inc., ...
's '' Asteroids'',
Nintendo is a Japanese Multinational corporation, multinational video game company headquartered in Kyoto, Japan. It develops video games and video game consoles. Nintendo was founded in 1889 as by craftsman Fusajiro Yamauchi and originally produce ...
's '' Donkey Kong'', Namco's ''
Pac-Man originally called ''Puck Man'' in Japan, is a 1980 maze action video game developed and released by Namco for arcades. In North America, the game was released by Midway Manufacturing as part of its licensing agreement with Namco America. Th ...
'' and '' Galaga'', Konami's '' Frogger'',
Capcom is a Japanese video game developer and video game publisher, publisher. It has created a number of List of best-selling video game franchises, multi-million-selling game franchises, with its most commercially successful being ''Resident Evil' ...
's ''
1942 Events Below, the events of World War II have the "WWII" prefix. January * January 1 – WWII: The Declaration by United Nations is signed by China, the United Kingdom, the United States, the Soviet Union, and 22 other nations, in wh ...
'' and
Sega is a Japanese multinational corporation, multinational video game and entertainment company headquartered in Shinagawa, Tokyo. Its international branches, Sega of America and Sega Europe, are headquartered in Irvine, California and London, r ...
's '' Zaxxon'', the worldwide success of
Nintendo is a Japanese Multinational corporation, multinational video game company headquartered in Kyoto, Japan. It develops video games and video game consoles. Nintendo was founded in 1889 as by craftsman Fusajiro Yamauchi and originally produce ...
's '' Super Mario Bros.'' and the release in the
1990s File:1990s decade montage.png, From top left, clockwise: The Hubble Space Telescope orbits the Earth after it was launched in 1990; American F-16s and F-15s fly over burning oil fields in Operation Desert Storm, also known as the 1991 Gulf War ...
of Sony
PlayStation is a video gaming brand that consists of five home video game consoles, two handhelds, a media center, and a smartphone, as well as an online service and multiple magazines. The brand is produced by Sony Interactive Entertainment, a divisi ...
console, the first one to break the record of 100 million units sold, with '' Gran Turismo'' being the system's best selling video game. * Video game design becomes a discipline. Some game designers in this century stand out for their work, such as
Shigeru Miyamoto is a Japanese video game designer, producer and game director at Nintendo, where he serves as one of its representative directors. Widely regarded as one of the most accomplished and influential designers in the history of video games, he is ...
,
Hideo Kojima is a Japanese video game designer, director, producer and writer. He is regarded as an auteur of video games. He developed a strong passion for action/adventure cinema and literature during his childhood and adolescence. In 1986, he was hired ...
, Sid Meier and Will Wright.


Art and architecture

* The art world experienced the development of new styles and explorations such as
fauvism Fauvism /ˈfoʊvɪzm̩/ is the style of ''les Fauves'' (French language, French for "the wild beasts"), a group of early 20th-century modern artists whose works emphasized painterly qualities and strong colour over the Representation (arts), repr ...
,
expressionism Expressionism is a modernist movement, initially in poetry and painting, originating in Northern Europe around the beginning of the 20th century. Its typical trait is to present the world solely from a subjective perspective, distorting it rad ...
, Dadaism,
cubism Cubism is an early-20th-century avant-garde art movement that revolutionized European painting and sculpture, and inspired related movements in music, literature and architecture. In Cubist artwork, objects are analyzed, broken up and reassemble ...
, de stijl,
surrealism Surrealism is a cultural movement that developed in Europe in the aftermath of World War I in which artists depicted unnerving, illogical scenes and developed techniques to allow the unconscious mind to express itself. Its aim was, according to l ...
,
abstract expressionism Abstract expressionism is a post–World War II art movement in American painting, developed in New York City in the 1940s. It was the first specifically American movement to achieve international influence and put New York at the center of the ...
, color field, pop art, minimal art, lyrical abstraction, and conceptual art. * The
modern art Modern art includes artistic work produced during the period extending roughly from the 1860s to the 1970s, and denotes the styles and philosophies of the art produced during that era. The term is usually associated with art in which the tradi ...
movement revolutionized art and culture and set the stage for both Modernism and its counterpart postmodern art as well as other contemporary art practices. *
Art Nouveau Art Nouveau (; ) is an international style of art, architecture, and applied art, especially the decorative arts. The style is known by different names in different languages: in German, in Italian, in Catalan, and also known as the Modern ...
began as a form of architecture and design but fell out of fashion after World War I. The style was dynamic and inventive but unsuited to the depression of the Great War. * In Europe, modern architecture departed from the decorated styles of the Victorian era. Streamlined forms inspired by machines became commonplace, enabled by developments in building materials and technologies. Before World War II, many European architects moved to the United States, where modern architecture continued to develop. * The automobile increased the mobility of people in the Western countries in the early-to-mid-century, and in many other places by the end of the 20th century. City design throughout most of the West became focused on transport via car.


Sport

* The popularity of sport increased considerably—both as an activity for all, and as entertainment, particularly on television. * The modern Olympic Games, first held in 1896, grew to include tens of thousands of athletes in dozens of sports. * The FIFA World Cup was first held in 1930, and was held every four years after World War II.


Science


Mathematics

Multiple new fields of mathematics were developed in the 20th century. In the first part of the 20th century,
measure theory In mathematics, the concept of a measure is a generalization and formalization of geometrical measures ( length, area, volume) and other common notions, such as mass and probability of events. These seemingly distinct concepts have many simil ...
, functional analysis, and topology were established, and significant developments were made in fields such as abstract algebra and probability. The development of set theory and formal logic led to
Gödel's incompleteness theorems Gödel's incompleteness theorems are two theorems of mathematical logic Mathematical logic is the study of logic, formal logic within mathematics. Major subareas include model theory, proof theory, set theory, and recursion theory. Research i ...
. Later in the 20th century, the development of computers led to the establishment of a theory of computation. Computationally-intense results include the study of
fractal In mathematics, a fractal is a geometric shape containing detailed structure at arbitrarily small scales, usually having a fractal dimension strictly exceeding the topological dimension. Many fractals appear similar at various scales, as illu ...
s and a proof of the
four color theorem In mathematics, the four color theorem, or the four color map theorem, states that no more than four colors are required to color the regions of any map so that no two adjacent regions have the same color. ''Adjacent'' means that two regions sh ...
in 1976.


Physics

* New areas of physics, like special relativity, general relativity, and quantum mechanics, were developed during the first half of the century. In the process, the internal structure of atoms came to be clearly understood, followed by the discovery of elementary particles. * It was found that all the known
force In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity (e.g. moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a p ...
s can be traced to only four fundamental interactions. It was discovered further that two forces, electromagnetism and weak interaction, can be merged in the electroweak interaction, leaving only three different fundamental interactions. * Discovery of nuclear reactions, in particular nuclear fusion, finally revealed the source of
solar Solar may refer to: Astronomy * Of or relating to the Sun ** Solar telescope, a special purpose telescope used to observe the Sun ** A device that utilizes solar energy (e.g. "solar panels") ** Solar calendar, a calendar whose dates indicate t ...
energy. *
Radiocarbon dating Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon. The method was dev ...
was invented, and became a powerful technique for determining the age of
prehistoric Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of ...
animals and plants as well as historical objects.


Astronomy

* A much better understanding of the evolution of the universe was achieved, its
age Age or AGE may refer to: Time and its effects * Age, the amount of time someone or something has been alive or has existed ** East Asian age reckoning, an Asian system of marking age starting at 1 * Ageing or aging, the process of becoming older ...
(about 13.8 billion years) was determined, and the
Big Bang The Big Bang event is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models of the Big Bang explain the evolution of the observable universe from the ...
theory on its origin was proposed and generally accepted. * The age of the Solar System, including Earth, was determined, and it turned out to be much older than believed earlier: more than 4 billion years, rather than the 20 million years suggested by Lord Kelvin in 1862. * The planets of the Solar System and their moons were closely observed via numerous space probes. Pluto was discovered in 1930 on the edge of the solar system, although in the early 21st century, it was reclassified as a dwarf planet instead of a planet proper, leaving eight planets. * No trace of life was discovered on any of the other planets orbiting the Sun (or elsewhere in the universe), although it remained undetermined whether some forms of primitive life might exist, or might have existed, somewhere in the Solar System.
Extrasolar planets An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...
were observed for the first time.


Agriculture

* Norman Borlaug fathered the Green Revolution, the set of research technology transfer initiatives occurring between 1950 and the late 1960s that increased agricultural production in parts of the world, beginning most markedly in the late 1960s, and is often credited with saving over a billion people worldwide from starvation.


Biology

* Genetics was unanimously accepted and significantly developed. The structure of DNA was determined in 1953 by
James Watson James Dewey Watson (born April 6, 1928) is an American molecular biologist, geneticist, and zoologist. In 1953, he co-authored with Francis Crick the academic paper proposing the double helix structure of the DNA molecule. Watson, Crick and ...
,
Francis Crick Francis Harry Compton Crick (8 June 1916 – 28 July 2004) was an English molecular biologist, biophysicist, and neuroscientist. He, James Watson, Rosalind Franklin, and Maurice Wilkins played crucial roles in deciphering the helical struc ...
,
Rosalind Franklin Rosalind Elsie Franklin (25 July 192016 April 1958) was a British chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, co ...
and
Maurice Wilkins Maurice Hugh Frederick Wilkins (15 December 1916 – 5 October 2004) was a New Zealand-born British biophysicist and Nobel laureate whose research spanned multiple areas of physics and biophysics, contributing to the scientific understanding o ...
, following by developing techniques which allow to read DNA sequences and culminating in starting the
Human Genome Project The Human Genome Project (HGP) was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying, mapping and sequencing all of the genes of the human genome from both a ...
(not finished in the 20th century) and cloning the first mammal in 1996. * The role of sexual reproduction in evolution was understood, and
bacterial conjugation Bacterial conjugation is the transfer of genetic material between bacterial cells by direct cell-to-cell contact or by a bridge-like connection between two cells. This takes place through a pilus. It is a parasexual mode of reproduction in bacteri ...
was discovered. * The convergence of various sciences for the formulation of the
modern evolutionary synthesis Modern synthesis or modern evolutionary synthesis refers to several perspectives on evolutionary biology, namely: * Modern synthesis (20th century), the term coined by Julian Huxley in 1942 to denote the synthesis between Mendelian genetics and s ...
(produced between 1936 and 1947), providing a widely accepted account of evolution.


Medicine

* Placebo- controlled, randomized, blinded clinical trials became a powerful tool for testing new medicines. * Antibiotics drastically reduced mortality from
bacterial disease Pathogenic bacteria are bacteria that can cause disease. This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and are often beneficial but others can cause infectious diseases. The number of t ...
s. * A vaccine was developed for polio, ending a worldwide epidemic. Effective vaccines were also developed for a number of other serious infectious diseases, including
influenza Influenza, commonly known as "the flu", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms ...
, diphtheria, pertussis (whooping cough), tetanus,
measles Measles is a highly contagious infectious disease caused by measles virus. Symptoms usually develop 10–12 days after exposure to an infected person and last 7–10 days. Initial symptoms typically include fever, often greater than , cough, ...
,
mumps MUMPS ("Massachusetts General Hospital Utility Multi-Programming System"), or M, is an imperative, high-level programming language with an integrated transaction processing key–value database. It was originally developed at Massachusetts Gener ...
, rubella (German measles),
chickenpox Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV). The disease results in a characteristic skin rash that forms small, itchy blisters, which eventually scab ...
, hepatitis A, and hepatitis B. * Epidemiology and vaccination led to the eradication of the smallpox virus in humans. * X-rays became a powerful diagnostic tool for a wide spectrum of diseases, from bone fractures to cancer. In the 1960s,
computerized tomography A computed tomography scan (CT scan; formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. The personnel that perform CT scans are called radiographers ...
was invented. Other important diagnostic tools developed were sonography and
magnetic resonance imaging Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio wave ...
. * Development of vitamins virtually eliminated scurvy and other vitamin-deficiency diseases from industrialized societies. * New psychiatric drugs were developed. These include antipsychotics for treating hallucinations and delusions, and
antidepressant Antidepressants are a class of medication used to treat major depressive disorder, anxiety disorders, chronic pain conditions, and to help manage addictions. Common side-effects of antidepressants include dry mouth, weight gain, dizziness, hea ...
s for treating depression. * The role of tobacco smoking in the causation of cancer and other diseases was proven during the 1950s (see British Doctors Study). * New methods for cancer treatment, including chemotherapy, radiation therapy, and immunotherapy, were developed. As a result, cancer could often be
cure A cure is a substance or procedure that ends a medical condition, such as a medication, a surgical operation, a change in lifestyle or even a philosophical mindset that helps end a person's sufferings; or the state of being healed, or cured. The ...
d or placed in
remission Remission often refers to: *Forgiveness Remission may also refer to: Healthcare and science *Remission (medicine), the state of absence of disease activity in patients with a chronic illness, with the possibility of return of disease activity *R ...
. * The development of blood typing and blood banking made blood transfusion safe and widely available. * The
invention An invention is a unique or novel device, method, composition, idea or process. An invention may be an improvement upon a machine, product, or process for increasing efficiency or lowering cost. It may also be an entirely new concept. If an i ...
and development of
immunosuppressive drug Immunosuppressive drugs, also known as immunosuppressive agents, immunosuppressants and antirejection medications, are drugs that inhibit or prevent activity of the immune system. Classification Immunosuppressive drugs can be classified into ...
s and
tissue typing Tissue typing is a procedure in which the tissues of a prospective donor and recipient are tested for compatibility prior to transplantation. Mismatched donor and recipient tissues can lead to rejection of the tissues. There are multiple methods of ...
made organ and tissue transplantation a clinical reality. * New methods for heart surgery were developed, including
pacemaker An artificial cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural cardiac pacemaker) or pacemaker is a medical device that generates electrical impulses delivered by electrodes to the chambers of the heart eith ...
s and artificial hearts. * Cocaine and heroin were widely illegalized after being found to be addictive and destructive. Psychoactive drugs such as LSD and MDMA were discovered and subsequently prohibited in many countries. Prohibition of drugs caused a growth in the black market drug industry, and expanded enforcement led to a larger prison population in some countries. *
Contraceptive Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unwanted pregnancy. Birth control has been used since ancient times, but effective and safe methods of birth contr ...
drugs were developed, which reduced population growth rates in industrialized countries, as well as decreased the taboo of premarital sex throughout many western countries. * The development of medical
insulin Insulin (, from Latin ''insula'', 'island') is a peptide hormone produced by beta cells of the pancreatic islets encoded in humans by the ''INS'' gene. It is considered to be the main anabolic hormone of the body. It regulates the metabolism o ...
during the 1920s helped raise the life expectancy of diabetics to three times of what it had been earlier. * Vaccines, hygiene and clean water improved health and decreased mortality rates, especially among infants and the young.


Notable diseases

* An
influenza Influenza, commonly known as "the flu", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. These symptoms ...
pandemic, Spanish Flu, killed anywhere from 17 to 100 million people between 1918 and 1919. * A new
viral Viral means "relating to viruses" (small infectious agents). Viral may also refer to: Viral behavior, or virality Memetic behavior likened that of a virus, for example: * Viral marketing, the use of existing social networks to spread a marke ...
disease, called the Human Immunodeficiency Virus, or HIV, arose in Africa and subsequently killed millions of people throughout the world. HIV leads to a syndrome called Acquired Immunodeficiency Syndrome, or AIDS. Treatments for HIV remained inaccessible to many people living with AIDS and HIV in developing countries, and a cure has yet to be discovered. * Because of increased life spans, the prevalence of cancer,
Alzheimer's disease Alzheimer's disease (AD) is a neurodegeneration, neurodegenerative disease that usually starts slowly and progressively worsens. It is the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in short-term me ...
, Parkinson's disease, and other diseases of
old age Old age refers to ages nearing or surpassing the life expectancy of human beings, and is thus the end of the human life cycle. Terms and euphemisms for people at this age include old people, the elderly (worldwide usage), OAPs (British usage ...
increased slightly. * Changes in food production, along with sedentary lifestyles due to labor-saving devices and the increase in home entertainment, contributed to an "epidemic" of obesity, at first in the rich countries, but by the end of the 20th century spreading to the developing world.


Energy and the environment

*
Fossil fuels A fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. The main fossil fuels are coal, oil, and natural gas. Fossil fuels ...
and nuclear power were the dominant forms of energy sources. * Widespread use of petroleum in industry—both as a chemical precursor to plastics and as a fuel for the automobile and airplane—led to the geopolitical importance of petroleum resources. The Middle East, home to many of the world's oil deposits, became a center of geopolitical and military tension throughout the latter half of the century. (For example, oil was a factor in Japan's decision to go to war against the United States in 1941, and the oil cartel,
OPEC The Organization of the Petroleum Exporting Countries (OPEC, ) is a cartel of countries. Founded on 14 September 1960 in Baghdad by the first five members (Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela), it has, since 1965, been headquart ...
, used an oil embargo of sorts in the wake of the Yom Kippur War in the 1970s). * The increase in
fossil fuel A fossil fuel is a hydrocarbon-containing material formed naturally in the Earth's crust from the remains of dead plants and animals that is extracted and burned as a fuel. The main fossil fuels are coal, oil, and natural gas. Fossil fuels m ...
consumption also fueled a major scientific controversy over its effect on air pollution, global warming, and global climate change. *
Pesticide Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampri ...
s,
herbicide Herbicides (, ), also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page fo ...
s and other toxic chemicals accumulated in the environment, including in the bodies of humans and other animals. *
Population growth Population growth is the increase in the number of people in a population or dispersed group. Actual global human population growth amounts to around 83 million annually, or 1.1% per year. The global population has grown from 1 billion in 1800 to ...
and worldwide deforestation diminished the quality of the environment. * In the last third of the century, concern about humankind's impact on the Earth's
environment Environment most often refers to: __NOTOC__ * Natural environment, all living and non-living things occurring naturally * Biophysical environment, the physical and biological factors along with their chemical interactions that affect an organism or ...
made environmentalism popular. In many countries, especially in Europe, the movement was channeled into politics through
Green parties A green party is a formally organized political party based on the principles of green politics, such as social justice, environmentalism and nonviolence. Greens believe that these issues are inherently related to one another as a foundation f ...
. Increasing awareness of global warming began in the 1980s, commencing decades of social and political debate.


Engineering and technology

One of the prominent traits of the 20th century was the dramatic growth of technology. Organized research and practice of science led to advancement in the fields of communication, electronics, engineering, travel, medicine, and war. * Basic home appliances including washing machines,
clothes dryer A clothes dryer, also known as tumble dryer or simply dryer, is a powered household appliance that is used to remove moisture from a load of clothing, bedding and other textiles, usually shortly after they are washed in a washing machine. Many dry ...
s, furnaces, exercise machines,
dishwashers A dishwasher is a machine that is used to clean dishware Tableware is any dish or dishware used for setting a table, serving food, and dining. It includes cutlery, glassware, serving dishes, and other items for practical as well as dec ...
,
refrigerator A refrigerator, colloquially fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so th ...
s, freezers,
electric stove An electric stove or electric range is a stove with an integrated electrical heating device to cook and bake. Electric stoves became popular as replacements for solid-fuel (wood or coal) stoves which required more labor to operate and maintain. S ...
s and vacuum cleaners became popular from the 1920s through the 1950s. Radios were popularized as a form of entertainment during the 1920s, followed by television during the 1950s. * The first airplane, the '' Wright Flyer'', was flown in 1903. With the engineering of the faster
jet engine A jet engine is a type of reaction engine discharging a fast-moving jet of heated gas (usually air) that generates thrust by jet propulsion. While this broad definition can include rocket, Pump-jet, water jet, and hybrid propulsion, the term ...
in the 1940s, mass air travel became commercially viable. * The assembly line made mass production of the automobile viable. By the end of the 20th century, billions of people had automobiles for personal transportation. The combination of the automobile, motor boats and air travel allowed for unprecedented personal mobility. In western nations, motor vehicle accidents became the greatest cause of death for young people. However, expansion of divided highways reduced the death rate. * The triode tube was invented. *Air conditioning of buildings became common * New materials, most notably
stainless steel Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon, other nonmetals and metals to obtain other desired properties. Stainless steel's corros ...
, Velcro,
silicone A silicone or polysiloxane is a polymer made up of siloxane (−R2Si−O−SiR2−, where R = organic group). They are typically colorless oils or rubber-like substances. Silicones are used in sealants, adhesives, lubricants, medicine, cooking ...
, teflon, and plastics such as
polystyrene Polystyrene (PS) is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a ...
, PVC, polyethylene, and nylon came into widespread use for many various applications. These materials typically have tremendous performance gains in strength, temperature, chemical resistance, or mechanical properties over those known prior to the 20th century. * Aluminum became an inexpensive metal and became second only to iron in use. * Thousands of chemicals were developed for industrial processing and home use. * Digital computers came into use


Space exploration

* The Space Race between the United States and the Soviet Union gave a peaceful outlet to the political and military tensions of the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
, leading to the first
human spaceflight Human spaceflight (also referred to as manned spaceflight or crewed spaceflight) is spaceflight with a crew or passengers aboard a spacecraft, often with the spacecraft being operated directly by the onboard human crew. Spacecraft can also be ...
with the Soviet Union's Vostok 1 mission in 1961, and man's first landing on another world—the Moon—with America's Apollo 11 mission in 1969. Later, the first
space station A space station is a spacecraft capable of supporting a human crew in orbit for an extended period of time, and is therefore a type of space habitat. It lacks major propulsion or landing systems. An orbital station or an orbital space station i ...
was launched by the Soviet space program. The United States developed the first reusable spacecraft system with the Space Shuttle program, first launched in 1981. As the century ended, a permanent manned presence in space was being founded with the ongoing construction of the International Space Station. * In addition to human spaceflight, unmanned space probes became a practical and relatively inexpensive form of exploration. The first orbiting space probe,
Sputnik 1 Sputnik 1 (; see § Etymology) was the first artificial Earth satellite. It was launched into an elliptical low Earth orbit by the Soviet Union on 4 October 1957 as part of the Soviet space program. It sent a radio signal back to Earth for t ...
, was launched by the Soviet Union in 1957. Over time, a massive system of artificial satellites was placed into orbit around Earth. These satellites greatly advanced navigation, communications, military intelligence, geology, climate, and numerous other fields. Also, by the end of the 20th century, unmanned probes had visited or flew by the Moon,
Mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...
, Venus, Mars, Jupiter,
Saturn Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half times that of Earth. It has only one-eighth the average density of Earth; h ...
, Uranus,
Neptune Neptune is the eighth planet from the Sun and the farthest known planet in the Solar System. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times ...
, and various asteroids and comets, with Voyager 1 being the farthest man made object from Earth at 23,5 billion kilometers away from Earth as of 6 September 2022, and together with Voyager 2 both carrying The Voyager Golden Record containing sounds, music and greetings in 55 languages as well as 116 images of nature, human advancement, space and society. * The Hubble Space Telescope, launched in 1990, greatly expanded our understanding of the Universe and brought brilliant images to TV and computer screens around the world. * The
Global Positioning System The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...
, a series of satellites that allow land-based receivers to determine their exact location, was developed and deployed.


Religion

* 1900s – A number of related revival movements mark the start of Pentecostalism. * 1904 — Aleister Crowley dictates '' The Book of the Law'', the foundational text of Thelema. * 1922 – The Soviet Union establishes a doctrine of state atheism. * 1930 — Wallace Fard Muhammad founds the
Nation of Islam The Nation of Islam (NOI) is a religious and political organization founded in the United States by Wallace Fard Muhammad in 1930. A black nationalist organization, the NOI focuses its attention on the African diaspora, especially on African ...
. The Seventh Lambeth Conference allows for the possibility of birth control within Anglicanism, the first example of a modern Christian church supporting such a position. * 1940s — Wicca is formalized by Gerald Gardner and Doreen Valiente. * 1950s — Sayyid Qutb articulates Qutbism, a violent variety of
Islamism Islamism (also often called political Islam or Islamic fundamentalism) is a political ideology which posits that modern states and regions should be reconstituted in constitutional, economic and judicial terms, in accordance with what is ...
that would later become foundational to jihadist ideology.
Maharishi Mahesh Yogi Maharishi Mahesh Yogi (born Mahesh Prasad Varma, 12 January 1918
begins to teach Transcendental Meditation. * 1953 —
L. Ron Hubbard Lafayette Ronald Hubbard (March 13, 1911 – January 24, 1986) was an American author, primarily of science fiction and fantasy stories, who is best known for having founded the Church of Scientology. In 1950, Hubbard authored '' Dianetic ...
founds the
Church of Scientology The Church of Scientology is a group of interconnected corporate entities and other organizations devoted to the practice, administration and dissemination of Scientology, which is variously defined as a cult, a scientology as a business, bu ...
, which has a unique cosmology based on science fiction and his older system of
Dianetics Dianetics (from Greek ''dia'', meaning "through", and ''nous'', meaning "mind") is a set of pseudoscientific ideas and practices regarding the metaphysical relationship between the mind and body created by science fiction writer L. Ron Hubba ...
. * 1956 —
B. R. Ambedkar Bhimrao Ramji Ambedkar (14 April 1891 – 6 December 1956) was an Indian jurist, economist, social reformer and political leader who headed the committee drafting the Constitution of India from the Constituent Assembly debates, served a ...
launches the Dalit Buddhist movement. * 1960 – The
charismatic movement The charismatic movement in Christianity is a movement within established or mainstream Christian denominations to adopt beliefs and practices of Charismatic Christianity with an emphasis on baptism with the Holy Spirit, and the use of spirit ...
starts within Anglicanism, quickly spreading to other Christian sects. * 1962–65 – The Second Vatican Council is held, resulting in significant changes in the Catholic Church. * 1970s — New Age beliefs and practices are popularized. * 1979 – In Shia Islam, the
Islamic Revolution The Iranian Revolution ( fa, انقلاب ایران, Enqelâb-e Irân, ), also known as the Islamic Revolution ( fa, انقلاب اسلامی, Enqelâb-e Eslâmī), was a series of events that culminated in the overthrow of the Pahlavi dyna ...
establishes a theocratic state within Iran. * 1988 —
Al-Qaeda Al-Qaeda (; , ) is an Islamic extremism, Islamic extremist organization composed of Salafist jihadists. Its members are mostly composed of Arab, Arabs, but also include other peoples. Al-Qaeda has mounted attacks on civilian and military ta ...
, a network of
Islamic extremists Islamic extremism, Islamist extremism, or radical Islam, is used in reference to extremist beliefs and behaviors which are associated with the Islamic religion. These are controversial terms with varying definitions, ranging from academic unde ...
, is founded among Arab members of the Afghan mujahideen. It engages in a number of terror attacks throughout the 1990s, leading up to the September 11 attacks in 2001. * 1999 — Falun Gong, a Chinese new religious movement dating to the early 1990s, begins to be
persecuted Persecution is the systematic mistreatment of an individual or group by another individual or group. The most common forms are religious persecution, racism, and political persecution, though there is naturally some overlap between these terms ...
by the Chinese government.


Economics

* The
Great Depression The Great Depression (19291939) was an economic shock that impacted most countries across the world. It was a period of economic depression that became evident after a major fall in stock prices in the United States. The economic contagio ...
was a worldwide
economic slowdown In economics, a recession is a business cycle contraction when there is a general decline in economic activity. Recessions generally occur when there is a widespread drop in spending (an adverse demand shock). This may be triggered by various ...
that lasted throughout the early 1930s. * The Soviet Union implemented a series of
five-year plans Five-year plan may refer to: Nation plans *Five-year plans of the Soviet Union, a series of nationwide centralized economic plans in the Soviet Union *Five-Year Plans of Argentina *Five-Year Plans of Bhutan, a series of national economic developm ...
for industrialization and economic development. * Most countries abandoned the gold standard for their currency. The
Bretton Woods system The Bretton Woods system of monetary management established the rules for commercial and financial relations among the United States, Canada, Western European countries, Australia, and Japan after the 1944 Bretton Woods Agreement. The Bretto ...
involved currencies being pegged to the United States dollar; after the system collapsed in 1971 most major currencies had a
floating exchange rate In macroeconomics and economic policy, a floating exchange rate (also known as a fluctuating or flexible exchange rate) is a type of exchange rate regime in which a currency's value is allowed to fluctuate in response to foreign exchange mar ...
.


See also

* 20th-century inventions *
Death rates in the 20th century Death rates in the 20th century is the ratio of deaths compared to the population around the world throughout the 20th century. When giving these ratios, they are most commonly expressed by number of deaths per 1,000 people per year. Many factors ...
* Infectious disease in the 20th century *
Modern art Modern art includes artistic work produced during the period extending roughly from the 1860s to the 1970s, and denotes the styles and philosophies of the art produced during that era. The term is usually associated with art in which the tradi ...
*
Short twentieth century The term ''short 20th century'', originally proposed by Iván Berend (Hungarian Academy of Sciences) but defined by Eric Hobsbawm, a British Marxist historian and author, refers to the period of 78 years between the years 1914 and 1991. The conv ...
* Timelines of modern history * List of 20th-century women artists *
List of notable 20th-century writers This is a partial list of 20th-century writers. This list includes notable artists, authors, philosophers, playwrights, poets, scientists and other important and noteworthy contributors to literature. The two most basic written literary categories ...
* List of 20th-century American writers by birth year *
List of battles 1901–2000 This article lists all the battles that occurred in the years of the 20th century (1901-2000). 1901–1913 *1901 ** Battle of Lonoy 5 March ** Battle of Groenkloof 5 September ** Battle of Elands River 17 September ** Battle of Blood River ...
* List of stories set in a future now past


References


Sources

*
Climate Change 2013 Working Group 1 website.
* (pb: ) * *


Further reading

* Brower, Daniel R. and Thomas Sanders. ''The World in the Twentieth Century'' (7th Ed, 2013) * CBS News
''People of the century''
Simon and Schuster, 1999. * Grenville, J. A. S. ''A History of the World in the Twentieth Century'' (1994)
online free
* Hallock, Stephanie A. ''The World in the 20th Century: A Thematic Approach'' (2012) * Langer, William. ''An Encyclopedia of World History'' (5th ed. 1973); highly detailed outline of event
online free
* Morris, Richard B. and Graham W. Irwin, eds. ''Harper Encyclopedia of the Modern World: A Concise Reference History from 1760 to the Present'' (1970
online
* Pindyck, Robert S. "What we know and don’t know about climate change, and implications for policy." ''Environmental and Energy Policy and the Economy'' 2.1 (2021): 4–43
online
* Pollard, Sidney, ed. ''Wealth and Poverty: an Economic History of the 20th Century'' (1990), 260 pp; global perspectiv
online free
* Stearns, Peter, ed. ''The Encyclopedia of World History'' (2001) *


External links


The 20th Century Research Project


* ttp://www.bl.uk/20th-century-literature ''Discovering Literature: 20th century''at the British Library {{DEFAULTSORT:20th century 2nd millennium Centuries Late modern period