 Map America America is the second largest isolated landmass of the earth, comprising the two continents of the western hemisphere. America is a common designation for either or both North America and South America, for the western hemisphere as a whole, and for the United States of America. The entire western hemisphere is often called the Americas. The word first appeared in Cosmographiae introductio (Introduction to Cosmography), edited and published in 1507 by the German cartographer Martin Waldseemüller. The name was derived from Americus, the Latinized given name of the Italian navigator Amerigo Vespucci, whose expeditions to the New World are described in the work. As used by Waldseemüller, America specifically referred to the lands discovered by Christopher Columbus, Vespucci, and other early explorers of the West Indies and the northeastern coast of the southern continent. The Flemish geographer Gerardus Mercator first used the word to indicate all the western hemisphere on a map of the world published in 1538.
North America
North America, third largest of the seven continents, including Canada (the 2nd largest country in area in the world), the United States (3rd largest), and Mexico (14th largest). The continent also includes Greenland, the largest island, as well as the small French overseas department of Saint-Pierre and Miquelon and the British dependency of Bermuda (both made up of small islands in the Atlantic Ocean). With 518 million inhabitants (2006 estimate), North America is the 4th most populous continent; the United States ranks 3rd and Mexico 11th in population among the world's countries. Canada and the United States have technologically developed early modern economies, and Mexico, although less technologically developed than its neighbors, contains some of the world's greatest deposits of petroleum and natural gas. Together with Central America, the West Indies, and South America, North America makes up the Western Hemisphere of Earth. North America is sometimes defined to include Central America and the West Indies, which are treated separately in Encarta Encyclopedia. The name America is derived from that of Italian navigator Amerigo Vespucci, who may have visited the mainland of North America in 1497 and 1498.
Central America
Central America is a region of the western hemisphere, made up of a long, tapering isthmus that forms a bridge between North and South America. Central America, which is defined by geographers as part of North America, has an area of about 521,500 sq km (about 201,300 sq mi) and includes the countries of Guatemala, Belize, El Salvador, Honduras, Nicaragua, Costa Rica, and Panama. The region has a population of approximately 36.4 million (2000 estimate).
South America
South America is the fourth largest of the Earth's seven continents (after Asia, Africa, and North America), occupying 17,820,900 sq km (6,880,700 sq mi), or 12 percent of the Earth's land surface. It lies astride the equator and tropic of Capricorn and is joined by the Isthmus of Panama, on the north, to Central and North America. The continent extends 7,400 km (4,600 mi) from the Caribbean Sea on the north to Cape Horn on the south, and its maximum width, between Ponta do Seixas, on Brazil's Atlantic coast, and Punta Pariñas, on Peru's Pacific coast, is 5,160 km (3,210 mi). South America has a 2006 estimated population of 376 million, or 6 percent of the world's people. The continent comprises 12 nations. Ten of the countries are Latin: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, Uruguay, and Venezuela. Two of the nations are former dependencies: Guyana, of the United Kingdom, and Suriname, of The Netherlands. South America also includes French Guiana, an overseas department of France. Located at great distances from the continent in the Pacific Ocean are several territories of South American republics: the Juan Fernández Islands and Easter Island (Chile) and the Galápagos Islands (Ecuador). Nearer the coast, in the Atlantic Ocean, is the Fernando de Noronha Archipelago, which is a Brazilian territory, and, farther south, the British dependency of the Falkland Islands, which is claimed by Argentina as the Islas Malvinas. The coastline of South America is relatively regular except in the extreme south and southwest, where it is indented by numerous fjords.
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