What is the longest river in the world?

The Nile River is traditionally considered the longest river in the world, with a length of about 6,650 kilometres (4,132 miles). It flows through northeastern Africa and passes through several countries, including Uganda, Sudan, and Egypt, before emptying into the Mediterranean Sea.

However, some studies suggest that the Amazon River may be slightly longer depending on how its source is measured. Because of this, there is ongoing debate among geographers. In most school textbooks and general knowledge references, the Nile River is recognized as the world's longest river.