2. Amazon River (South America)
In terms of water volume, the Amazon River is the largest river in the world, and its average flow exceeds the sum of the next seven major rivers. However, in terms of geographical length, it ranks second, with a length of 6400 kilometers (3976 miles). The Amazon River in Spanish means a river in South America that flows through seven countries, including Brazil, Peru, Bolivia, Ecuador, Colombia, Venezuela and Guyana.