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The Americas, or America,<ref>See for example: america – Definition from the Merriam-Webster Online Dictionary. Retrieved on January 27, 2008; "dictionary.reference.com america". Dictionary.com. The American Heritage Dictionary of the English Language, Fourth Edition. Houghton Mifflin Company, 2004. Accessed: January 27, 2008.</ref><ref>Marjorie Fee and Janice MacAlpine, Oxford Guide to Canadian English Usage (2008) page 36 says "In Canada, American is used almost exclusively in reference to the United States and its citizens." Others, including The New Zealand Oxford Dictionary, The Canadian Oxford Dictionary, The Australian Oxford Dictionary and The Concise Oxford English Dictionary all specify both the Americas and the United States in their definition of "American".</ref><ref name=oxfordc>"America." The Oxford Companion to the English Language (ISBN 0-19-214183-X). McArthur, Tom, ed., 1992. New York: Oxford University Press, p. 33: "[16c: from the feminine of Americus, the Latinized first name of the explorer Amerigo Vespucci (1454–1512). The name America first appeared on a map in 1507 by the German cartographer Martin Waldseemüller, referring to the area now called Brazil]. Since the 16c, a name of the western hemisphere, often in the plural Americas and more or less synonymous with the New World. Since the 18c, a name of the United States of America. The second sense is now primary in English: ... However, the term is open to uncertainties: ..."</ref> also known as the Western Hemisphere<ref name=mwgeodict>{{#invoke:citation/CS1|citation |CitationClass=citation }}.

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United States Department of State, Bureau of Western Hemisphere Affairs, at http://www.state.gov/p/wha/index.htm
</ref> and the New World, comprise the totality of territories in North America and South America.<ref>Webster's New World College Dictionary, 2010 by Wiley Publishing, Inc., Cleveland, Ohio.</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=book }}</ref><ref>"continent n. 5. a." (1989) Oxford English Dictionary, 2nd edition. Oxford University Press ; "continent1 n." (2006) The Concise Oxford English Dictionary, 11th edition revised. (Ed.) Catherine Soanes and Angus Stevenson. Oxford University Press; "continent1 n." (2005) The New Oxford American Dictionary, 2nd edition. (Ed.) Erin McKean. Oxford University Press; "continent [2, n] 4 a" (1996) Webster's Third New International Dictionary, Unabridged. ProQuest Information and Learning ; "continent" (2007) Encyclopædia Britannica. Retrieved 14 January 2007, from Encyclopædia Britannica Online.</ref> Along with their associated islands, they cover 8.3% of the Earth's total surface area and 28.4% of its land area. The topography is dominated by the American Cordillera, a long chain of mountains that run the length of the west coast. The flatter eastern side of the Americas is dominated by large river basins, such as the Amazon, Mississippi, and La Plata. Since the Americas extend {{safesubst:#invoke:convert|convert}} from north to south, the climate and ecology vary widely, from the arctic tundra of Northern Canada, Greenland, and Alaska, to the tropical rain forests in Central America and South America.

Humans first settled the Americas from Asia between 42,000 and 17,000 years ago. A second migration of Na-Dene speakers followed later from Asia. The subsequent migration of the Inuit into the neoarctic around 3500 BCE completed what is generally regarded as the settlement by the indigenous peoples of the Americas.

The first known European settlement in the Americas was by the Norse explorer Leif Ericson.<ref>{{#invoke:citation/CS1|citation |CitationClass=news }}</ref> However the colonization never became permanent and was later abandoned. The voyages of Christopher Columbus from 1492 to 1502 resulted in permanent contact with European (and subsequently, other Old World) powers, which led to the Columbian exchange. Diseases introduced from Europe and Africa devastated the indigenous peoples, and the European powers colonised the Americas.<ref>[examiner.com/article/apocalypic-mysterious-plague-killed-millions-of-native-americans-the-1500s Examiner, 2012]</ref> Mass emigration from Europe, including large numbers of indentured servants, and forced immigration of African slaves largely replaced the indigenous peoples.

Decolonization of the Americas began with the American Revolution in 1776 and Haitian Revolution in 1791. Currently, almost all of the population of the Americas resides in independent countries; however, the legacy of the colonisation and settlement by Europeans is that the Americas share many common cultural traits, most notably Christianity and the use of Indo-European languages; primarily Spanish, English, Portuguese, French and to a lesser extent, Dutch.

The population is approaching 1 billion, with over 65% of them living in one of the three most populous countries (the United States, Brazil, and Mexico). The most populous cities are São Paulo, Mexico City, New York City, Buenos Aires and Los Angeles.

CIA political map of the Americas in Lambert azimuthal equal-area projection

Americas sections
Intro   History    Geography    Countries and territories    Demography    Terminology    Multinational organizations    See also    Notes    References    Further reading    External links   

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