Demographic History
Demographic history is the reconstructed record of human population in the past. Given the lack of population records prior to the 1950s, there are many gaps in our record of demographic history. Historical demographers must make do with estimates, models and extrapolations. For the demographic methodology, see historical demography. Historical population of the world Estimating the ancestral population of anatomically modern humans, Colin McEvedy and Richard Jones chose bounds based on gorilla and chimpanzee population densities of 1/km2 and 3-4/km2, respectively, then assumed that as ''Homo erectus'' moved up the food chain, they lost an order of magnitude in density. With a habitat of 68 million km2 ("the Old World south of latitude 50° north, minus Australia"), ''Homo erectus'' could have numbered around 1.7 million individuals. After being replaced by ''Homo sapiens'' and moving into the New World and de-glaciated territory, by 10,000 BC world population was approaching ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Demographics
Demography () is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the interplay of fertility (births), mortality (deaths), and migration. Demographic analysis examines and measures the dimensions and dynamics of populations; it can cover whole societies or groups defined by criteria such as education, nationality, religion, and ethnicity. Educational institutions usually treat demography as a field of sociology, though there are a number of independent demography departments. These methods have primarily been developed to study human populations, but are extended to a variety of areas where researchers want to know how populations of social actors can change across time through processes of birth, death, and migration. In the context of human biological populations, demographic analysis uses administrative records to develop an independent estimate of the population. Demographic analysis est ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Doubling Time
The doubling time is the time it takes for a population to double in size/value. It is applied to population growth, inflation, resource extraction, consumption of goods, compound interest, the volume of malignant tumours, and many other things that tend to grow over time. When the relative growth rate (not the absolute growth rate) is constant, the quantity undergoes exponential growth and has a constant doubling time or period, which can be calculated directly from the growth rate. This time can be calculated by dividing the natural logarithm of 2 by the exponent of growth, or approximated by dividing 70 by the percentage growth rate (more roughly but roundly, dividing 72; see the rule of 72 for details and derivations of this formula). The doubling time is a characteristic unit (a natural unit of scale) for the exponential growth equation, and its converse for exponential decay is the half-life. As an example, Canada's net population growth was 2.7 percent in the year 202 ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Urbanization
Urbanization (or urbanisation in British English) is the population shift from Rural area, rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change. It can also mean population growth in urban areas instead of rural ones. It is predominantly the process by which towns and City, cities are formed and become larger as more people begin to live and work in central areas. Although the two concepts are sometimes used interchangeably, urbanization should be distinguished from Urban sprawl, urban growth. Urbanization refers to the ''proportion'' of the total national population living in areas classified as urban, whereas urban growth strictly refers to the ''absolute'' number of people living in those areas. It is predicted that by 2050, about 64% of the developing world and 86% of the developed world will be urbanized. This is predicted to generate artificial scarcities of land, lack of dr ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Mughal India
The Mughal Empire was an early modern empire in South Asia. At its peak, the empire stretched from the outer fringes of the Indus River Basin in the west, northern Afghanistan in the northwest, and Kashmir in the north, to the highlands of present-day Assam and Bangladesh in the east, and the uplands of the Deccan Plateau in South India.. Quote: "The realm so defined and governed was a vast territory of some , ranging from the frontier with Central Asia in northern Afghanistan to the northern uplands of the Deccan plateau, and from the Indus basin on the west to the Assamese highlands in the east." The Mughal Empire is conventionally said to have been founded in 1526 by Babur, a chieftain from what is today Uzbekistan, who employed aid from the neighboring Safavid and Ottoman Empires Quote: "Babur then adroitly gave the Ottomans his promise not to attack them in return for their military aid, which he received in the form of the newest of battlefield inventions, the matchlock ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Facts On File
Infobase is an American publishing company, publisher of databases, reference book titles and textbooks geared towards the North American library, secondary school, and university-level curriculum markets. Infobase operates a number of prominent imprint (trade name), imprints, including Facts On File, Films for the Humanities & Sciences, Cambridge Educational, Ferguson Publishing, ''Vault Law'', Omnigraphics, and Chelsea House (which also serves as the imprint for the special collection series, "Bloom's Literary Criticism", under the direction of literary critic Harold Bloom). History Facts On File has been publishing books since 1941. It was owned by CCH (company), CCH from 1965 to 1993. The publisher publishes general reference and trade books. Facts On File acquired Ferguson Publishing, which specializes in career education works, in 2003. Chelsea House was founded in 1966. It is known for multi-volume reference works. The private equity firm Veronis Suhler Stevenson bought ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Mughal Empire
The Mughal Empire was an Early modern period, early modern empire in South Asia. At its peak, the empire stretched from the outer fringes of the Indus River Basin in the west, northern Afghanistan in the northwest, and Kashmir in the north, to the highlands of present-day Assam and Bangladesh in the east, and the uplands of the Deccan Plateau in South India.. Quote: "The realm so defined and governed was a vast territory of some , ranging from the frontier with Central Asia in northern Afghanistan to the northern uplands of the Deccan plateau, and from the Indus basin on the west to the Assamese highlands in the east." The Mughal Empire is conventionally said to have been founded in 1526 by Babur, a Tribal chief, chieftain from what is today Uzbekistan, who employed aid from the neighboring Safavid Iran, Safavid and Ottoman Empires Quote: "Babur then adroitly gave the Ottomans his promise not to attack them in return for their military aid, which he received in the form of the ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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John F
John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second Epistle of John, often shortened to 2 John * Third Epistle of John, often shortened to 3 John People * John the Baptist (died ), regarded as a prophet and the forerunner of Jesus Christ * John the Apostle (died ), one of the twelve apostles of Jesus Christ * John the Evangelist, assigned author of the Fourth Gospel, once identified with the Apostle * John of Patmos, also known as John the Divine or John the Revelator, the author of the Book of Revelation, once identified with the Apostle * John the Presbyter, a figure either identified with or distinguished from the Apostle, the Evangelist and John of Patmos Other people with the given name Religious figures * John, father of Andrew the Apostle and Saint Peter * Pope Jo ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Encyclopedia Of Public Health
The ''Encyclopedia of Public Health'' is a reference set of four volumes covering all aspects of public health for the lay reader. It covers infectious diseases and other topics related to public health, such as causes of injury or chronic diseases. The 900 articles are written by experts in this domain. Topics indirectly related but relevant to public health, such as the oath of Hippocrates, are covered. Controversial subjects are not avoided; an article on armed forces alcohol and drug abuse programs is followed by an article on arms control. It has received the CHOICE 2002 award for Outstanding Academic Reference Title and has been listed in the ''Booklist/Reference Book Bulletin'' Editor's Choice of Outstanding Reference titles. 2002 non-fiction books Public Health Public Health Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and priv ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Black Death
The Black Death was a bubonic plague pandemic that occurred in Europe from 1346 to 1353. It was one of the list of epidemics, most fatal pandemics in human history; as many as people perished, perhaps 50% of Europe's 14th century population. The disease is caused by the Bacteria, bacterium ''Yersinia pestis'' and spread by Flea, fleas and through the air. One of the most significant events in European history, the Black Death had far-reaching population, economic, and cultural impacts. It was the beginning of the second plague pandemic. The plague created religious, social and economic upheavals, with profound effects on the course of European history. The origin of the Black Death is disputed. Genetic analysis suggests ''Yersinia pestis'' bacteria evolved approximately 7,000 years ago, at the beginning of the Neolithic, with flea-mediated strains emerging around 3,800 years ago during the late Bronze Age. The immediate territorial origins of the Black Death and its outbreak ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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World Population
In demographics of the world, world demographics, the world population is the total number of humans currently alive. It was estimated by the United Nations to have exceeded eight billion in mid-November 2022. It took around 300,000 years of human prehistory and human history, history for the human population to reach a billion and only 218 more years to reach 8 billion. The human population has experienced Population growth, continuous growth following the Great Famine of 1315–1317 and the end of the Black Death in 1350, when it was nearly 370,000,000. The highest global List of countries by population growth rate, population growth rates, with increases of over 1.8% per year, occurred between 1955 and 1975, peaking at 2.1% between 1965 and 1970. The growth rate declined to 1.1% between 2015 and 2020 and is projected to decline further in the 21st century. The global population is still increasing, but there is significant uncertainty about its long-term trajectory due ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Song Dynasty
The Song dynasty ( ) was an Dynasties of China, imperial dynasty of China that ruled from 960 to 1279. The dynasty was founded by Emperor Taizu of Song, who usurped the throne of the Later Zhou dynasty and went on to conquer the rest of the Five Dynasties and Ten Kingdoms period#Ten Kingdoms, Ten Kingdoms, ending the Five Dynasties and Ten Kingdoms period. The Song frequently came into conflict with the contemporaneous Liao dynasty, Liao, Western Xia and Jin dynasty (1115–1234), Jin dynasties in northern China. After retreating to southern China following attacks by the Jin dynasty, the Song was eventually conquered by the Mongol-led Yuan dynasty. The History of the Song dynasty, dynasty's history is divided into two periods: during the Northern Song (; 960–1127), the capital was in the northern city of Bianjing (now Kaifeng) and the dynasty controlled most of what is now East China. The #Southern Song, 1127–1279, Southern Song (; 1127–1279) comprise the period following ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Feudalism
Feudalism, also known as the feudal system, was a combination of legal, economic, military, cultural, and political customs that flourished in Middle Ages, medieval Europe from the 9th to 15th centuries. Broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour. The classic definition, by François Louis Ganshof (1944),François Louis Ganshof (1944). ''Qu'est-ce que la féodalité''. Translated into English by Philip Grierson as ''Feudalism'', with a foreword by F. M. Stenton, 1st ed.: New York and London, 1952; 2nd ed: 1961; 3rd ed.: 1976. describes a set of reciprocal legal and Medieval warfare, military obligations of the warrior nobility and revolved around the key concepts of lords, vassals, and fiefs. A broader definition, as described by Marc Bloch (1939), includes not only the obligations of the warrior nobility but the obligations of all three estates of the realm: the nobility, the cl ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |