Its navigability changes near the capital of Loreto and Maynas in Peru, the city of Iquitos, as well as near the city of Manaus, where it receives one of its major tributaries, the Rio Negro.
This river's delta, located partially in the state of Para, sometimes includes the large island of Marajo. Formed from the confluence of the Ucayali and Maranon rivers, cities along its banks include Manacapuru and Obidos. Its navigability changes near the capital of Loreto and Maynas in Peru, the city of Iquitos, as well as near the city of Manaus, where it receives one of its major tributaries, the Rio Negro. For 10 points, name this river that flows through much of Brazil, a long South American waterway.
This river's delta, located partially in the state of Para, sometimes includes the large island of Marajo.
{Amazon} River