<human>:  Why is it called the Amazon Rain Forest?
<bot>: The Amazon Rain Forest is named after the Amazon River, which is the largest river in the world. The Amazon River flows through Brazil, Peru, Colombia, Venezuela, Ecuador, and Bolivia, making up the largest river system in the world. The Amazon Rain Forest is the largest tropical rainforest in the world, and is located in South America. The Amazon Rain Forest is also the largest rainforest in the world, covering about half of the land area of Brazil.