Which river is located in Africa and is the world's longest river, at 4,160 miles?

a. the Amazon River

b. the Congo River

c. the Niger River

d. the Nile River

D. The Nile River. The Amazon River, though very long, is not located in Africa. It is located in South America. The Congo and Niger Rivers are indeed in Africa, but are not as long as the Nile River. The Congo and Niger Rivers are less than 3,000 miles long, while the Nile river is 4,160 miles long.