Final answer:
The Nile River is Africa's longest river, flowing through 11 countries and playing a vital role in the region.
Step-by-step explanation:
The name of Africa's longest river is the Nile River. Spanning over 4,135 miles, it flows through 11 countries, including Egypt, Sudan, and Ethiopia. The Nile is a crucial water source for agriculture, transportation, and energy production in the region.
Learn more about Africa's longest river