South America

South America, the fourth largest continent on Earth, encompasses an area of 6,880,706 square miles (17,821,028 square kilometers). This is almost 12 percent of the surface area of Earth. At its widest point, the continent extends about 3,200 miles (5,150 kilometers). South America is divided into 12 independent countries: Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela. French Guiana, an overseas department (territory) of France, also occupies the continent.

The continent of South America can be divided into three main regions with distinct environmental and geological qualities. These are the eastern highlands and plateaus, the large Amazon River and its basin in the central part of the continent,...

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