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Rubber Boom
The Amazon rubber cycle or boom (, ; , ) was an important part of the socioeconomic history of Brazil and Amazonian regions of neighboring countries, being related to the commercialization of rubber and the genocide of indigenous peoples. Centered in the Amazon Basin, the boom resulted in a large expansion of colonization in the area, attracting immigrant workers and causing cultural and social transformations. Crimes against humanity were committed against local indigenous societies, including slavery, rape, torture and genocide. It encouraged the growth of cities such as Manaus and Belém, capitals within the respective Brazilian states of Amazonas and Pará, among many other cities throughout the region like Itacoatiara, Rio Branco, Eirunepé, Marabá, Cruzeiro do Sul and Altamira; as well as the expansion of Iquitos in Peru, Cobija in Bolivia and Leticia in Colombia. The first rubber boom and genocides occurred largely between 1879 and 1912. There was heightened rubb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cachuela Esperanza
Cachuela Esperanza is a village in the Bolivian Departamento Beni. Location ''Cachuela Esperanza'' ("rapids of hope") is situated on the right bank at the rapids of Beni River, 30 km before its confluence with Mamoré River which both form the Madeira River there. The village is only accessible on dirt roads and is located at an elevation of 134 m. History The place at the Beni rapids was discovered in 1846 by the Bolivian scientist José Agustín Palacios. Attracted by the rubber boom, Nicolas Suárez Callaú set up his company's headquarters of a multinational rubber empire at ''Cachuela Esperanza'', with branches at Acre, Manaus, Belém, and London. He had a theater and tennis courts built, a luxury hotel overlooking the rapids, and a modern hospital. ''Cachuela Esperanza'' had the first X-ray unit of Bolivia, and millionaires from Rio de Janeiro und São Paulo were flown in by seaplanes. In the 1920s, when natural rubber was substituted by synthetic rubber grad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cruzeiro Do Sul, Acre
Cruzeiro do Sul (, ''Southern Cross'') is a municipality located on the Juruá river in the west of the Brazilian state of Acre. It is the second-largest city in Acre. It is bordered to the north by the state of Amazonas, to the south by Peru, to the east by the municipality of Porto Walter, to the west by the municipality of Rodrigues Alves, to the northwest by the municipality of Tarauacá, and to the northwest by the municipality of Mâncio Lima. The municipality contains 23% of the Serra do Divisor National Park, created in 1989. Economy and buildings The principal economic activity of the municipality is rubber extraction and export, as it was in the majority of the state of Acre. This business attracted many immigrants in the 20th century, including Germans. Of lesser importance is the farming of the commodities of cassava, coffee and rice. The city also operates as a regional trading center. One of the city's most notable 20th-century structures is the Catedra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rubber Tree
''Hevea brasiliensis'', the Pará rubber tree, ''sharinga'' tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions. It is the most economically important member of the genus '' Hevea'' because the milky latex extracted from the tree is the primary source of natural rubber. Description ''Hevea brasiliensis'' is a tall deciduous tree growing to a height of up to in the wild. Cultivated trees are usually much smaller because drawing off the latex restricts their growth. The trunk is cylindrical and may have a swollen, bottle-shaped base. The bark is some shade of brown, and the inner bark oozes latex when damaged. The leaves have three leaflets and are spirally arranged. The inflorescences include separate male and female flowers. The flowers are pungent, creamy-yellow and have no petals. The fruit is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Rainforest
The Amazon rainforest, also called the Amazon jungle or Amazonia, is a Tropical and subtropical moist broadleaf forests, moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses , of which are covered by the rainforest. This region includes territory belonging to nine nations and 3,344 Indigenous territory (Brazil), indigenous territories. The majority of the forest, 60%, is in Amazônia Legal, Brazil, followed by Peruvian Amazonia, Peru with 13%, Amazon natural region, Colombia with 10%, and with minor amounts in Bolivia, Ecuador, French Guiana, Guyana, Suriname, and Venezuela. Four nations have "Amazonas (other), Amazonas" as the name of one of their first-level administrative regions, and France uses the name "Guiana Amazonian Park" for French Guiana's protected rainforest area. The Amazon represents over half of the total area of remaining rainforests on Earth, and comprises the largest a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garter
A garter is an article of clothing comprising a narrow band of fabric fastened about the leg to keep up stockings. In the eighteenth to twentieth centuries, they were tied just below the knee, where the leg is most slender, to keep the stocking from slipping. The advent of elastic has made them less necessary from this functional standpoint, although they are still often worn for fashion. Garters have been widely worn by men and women, depending on fashion trends. Garters in fashion In Elizabethan fashions, men wore garters with their hose, and colourful garters were an object of display. In Shakespeare's ''Twelfth Night'', "cross braced" garters (a long garter tied above and below the knee and crossed between), as worn by the character Malvolio, are an object of some derision. In male fashion for much of the 20th century a type of garter for holding up socks was used as a part of male dress; it is considered somewhat archaic now. Use in wedding traditions There is a Western ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Priestley
Joseph Priestley (; 24 March 1733 – 6 February 1804) was an English chemist, Unitarian, Natural philosophy, natural philosopher, English Separatist, separatist theologian, Linguist, grammarian, multi-subject educator and Classical liberalism, classical liberal Political philosophy, political theorist. He published over 150 works, and conducted experiments in several areas of science. Priestley is credited with his independent discovery of oxygen by the thermal decomposition of mercuric oxide, having isolated it in 1774. During his lifetime, Priestley's considerable scientific reputation rested on his invention of carbonated water, his writings on electricity, and his discovery of several "airs" (gases), the most famous being what Priestley dubbed "dephlogisticated air" (oxygen). Priestley's determination to defend phlogiston theory and to reject what would become the chemical revolution eventually left him isolated within the scientific community. Priestley's science was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amerindians
In the Americas, Indigenous peoples comprise the two continents' pre-Columbian inhabitants, as well as the ethnic groups that identify with them in the 15th century, as well as the ethnic groups that identify with the pre-Columbian population of the Americas as such. These populations exhibit significant diversity; some Indigenous peoples were historically hunter-gatherers, while others practiced agriculture and aquaculture. Various Indigenous societies developed complex social structures, including pre-contact monumental architecture, organized city, cities, city-states, chiefdoms, state (polity), states, monarchy, kingdoms, republics, confederation, confederacies, and empires. These societies possessed varying levels of knowledge in fields such as Pre-Columbian engineering in the Americas, engineering, Pre-Columbian architecture, architecture, mathematics, astronomy, History of writing, writing, physics, medicine, Pre-Columbian agriculture, agriculture, irrigation, geology, minin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hevea Brasiliensis
''Hevea brasiliensis'', the Pará rubber tree, ''sharinga'' tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family, Euphorbiaceae, originally native to the Amazon basin, but is now pantropical in distribution due to introductions. It is the most economically important member of the genus ''Hevea'' because the milky latex extracted from the tree is the primary source of natural rubber. Description ''Hevea brasiliensis'' is a tall deciduous tree growing to a height of up to in the wild. Cultivated trees are usually much smaller because drawing off the latex restricts their growth. The trunk is cylindrical and may have a swollen, bottle-shaped base. The bark is some shade of brown, and the inner bark oozes latex when damaged. The leaves have three leaflets and are spirally arranged. The inflorescences include separate male and female flowers. The flowers are pungent, creamy-yellow and have no petals. The fruit is a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elastomer
An elastomer is a polymer with viscoelasticity (i.e. both viscosity and elasticity) and with weak intermolecular forces, generally low Young's modulus (E) and high failure strain compared with other materials. The term, a portmanteau of ''elastic polymer'', is often used interchangeably with ''rubber'', although the latter is preferred when referring to vulcanisates. Each of the monomers which link to form the polymer is usually a compound of several elements among carbon, hydrogen, oxygen and silicon. Elastomers are amorphous polymers maintained above their glass transition temperature, so that considerable molecular reconformation is feasible without breaking of covalent bonds. Rubber-like solids with elastic properties are called elastomers. Polymer chains are held together in these materials by relatively weak intermolecular bonds, which permit the polymers to stretch in response to macroscopic stresses. Elastomers are usually thermosets (requiring vulcanization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leticia, Amazonas
Leticia () is the southernmost city in the Republic of Colombia, capital of the department of Amazonas, Colombia's southernmost town (4.09° south 69.57° west) and one of the major ports on the Amazon River. It has an elevation of 96 meters (315') above sea level and an average temperature of 27 °C (80.6 °F). Leticia has long been Colombia's shipping point for tropical fish for the aquarium trade. Leticia has a population of 33,503 located on the left bank of the Amazon River at the point where the borders of Colombia, Brazil and Peru meet in an area called Tres Fronteras. A long-standing border dispute involving Leticia, between Colombia and Peru, was decided in 1934 by the League of Nations after these two nations were engulfed in an armed conflict known as the Colombia-Peru War. It is adjacent to the larger Brazilian city of Tabatinga. Together with the Peruvian city of Santa Rosa de Yavari, the entire urban area has more than 120,000 residents spread alon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
