Africa’s Nile River, which is 4,160 miles (6,693 km) long, is the longest river in the world.
The Nile flows through the countries of Uganda, Sudan, and Egypt, and has two major tributaries, the White Nile and Blue Nile.
The northern section of the river flows almost entirely through desert, from Sudan into Egypt, and the Nile ends in a large delta that empties into the Mediterranean Sea.
The next longest is the Amazon River in South America, at 4,000 miles (6,436 km) long.
It runs through the countries of Brazil, Peru, Colombia, Ecuador, Bolivia, and Venezuela. The Amazon carries more water than the Nile.
The third longest river is the Yangtze, or Chang, River in China, at 3,434 miles (5,525 km).