Rank #60
The Amazon Basin, South America
This vast region in South America is home to the Amazon River, the world's largest river by volume. It covers an area of over 2.7 million square miles and spans nine countries: Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname, and
From Wikipedia
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers a large area spreading across the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela, as well as the territory of French Guiana.