The Amazon rainforest, also called the Amazon jungle or Amazonia, is a moist broadleaf tropical rainforest in the Amazon biome that covers most of the Amazon basin of South America. This basin encompasses 7 million km2 (2.7 million sq mi), of which 6 million km2 (2.3 million sq mi) are covered by the rainforest. This region includes territory belonging to nine nations and 3,344 indigenous territories.