I think it is the Amazon.
It is the River Amazon.
The most famous one is the Amazon, the largest in the world in terms of volume.
The Amazon, Parana River and Tocatins River run through Brazil.
The Amazon River
The Amazon river.
This river is called the Amazon river (Runs through north of brazil and has the same name as a rainforest)
The Amazon River, the second largest river in the world, flows through much of Brazil.
Argentina,Brazil
Paraguay River is such a major river in south central South America, running through Brazil.
The Amazon River which flows through Brazil
Amazon river
Brazil, Bolivia, Colombia, Ecuador, Peru and Venezuela