Final answer:
The Amazon River is the world's second largest river and has the largest drainage basin. It is more than 2,000 miles long and carries about one-fifth of the world's river water. The Amazon River competes with the Nile River for the title of the world's longest river.
Step-by-step explanation:
The world's second largest river, with the largest drainage basin on earth, is the Amazon River. The Amazon River, stretching more than 2,000 miles long, has an enormous drainage basin in the largest tropical rain forest in the world. The Amazon's many tributaries, such as the Rio Negro, the Madeira, and the Xingu, are also significant rivers in their own right, with some being more than 1,000 miles long. Flowing parallel to the equator, the Amazon competes with the Nile River as the longest river in the world. It also has the greatest discharge of any river, carrying about one-fifth of all river water in the world.