What countries are drained by the Amazon and its tributaries?

My answer: Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela are drained by the Amazon and its tributaries.

Right.

To determine the countries drained by the Amazon and its tributaries, you can follow these steps:

1. Understand the geography of the Amazon river basin: The Amazon basin is a vast region in South America that covers approximately 7 million square kilometers. It encompasses several countries and their respective territories.

2. Identify the Amazon river and its main tributaries: The Amazon river, the second longest river in the world, is the central drainage channel of the Amazon basin. It is fed by numerous tributaries, both large and small.

3. Locate the countries through which the Amazon and its tributaries flow: Based on the information provided, the countries drained by the Amazon and its tributaries are:

- Bolivia: The northern part of the country, mainly its department of Pando, is drained by the Madre de Dios River, a major tributary of the Amazon.
- Brazil: As the primary country in the Amazon basin, the majority of the Amazon and its tributaries, including the Madeira, Negro, Japurá, Purus, and Solimões rivers, flow through Brazil.
- Colombia: A section of Colombia's southern border is demarcated by the Amazon River.
- Ecuador: The eastern part of Ecuador, particularly its provinces of Sucumbíos, Orellana, Napo, Pastaza, and Morona Santiago, is drained by tributaries of the Amazon, such as the Napo River.
- Peru: A significant part of Peru, including its regions of Loreto, Ucayali, and Madre de Dios, is drained by various tributaries of the Amazon, such as the Marañón, Ucayali, and Madre de Dios rivers.
- Venezuela: A small portion of southeastern Venezuela is drained by the Orinoco River, which indirectly contributes water to the Amazon basin through the Casiquiare canal system.

By considering these factors, the countries drained by the Amazon and its tributaries are Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.