What are two main rivers?

* Nile River: The Nile River is the longest river in the world, flowing for over 6,600 kilometers through northeastern Africa. It is an essential source of water and fertile soil for the countries through which it passes, including Egypt, Sudan, and Ethiopia.

* Amazon River: The Amazon River is the second longest river in the world, flowing for over 6,400 kilometers through South America. It is the largest river by volume, carrying more water than the next seven largest rivers combined. The Amazon River is home to an incredibly diverse ecosystem, with over 10% of the world's known species found in the Amazon rainforest.