The Nile River is one of the longest rivers in the world, stretching about 6,650 kilometers (4,130 miles) through northeastern Africa. It flows northward through eleven countries, including Uganda, Sudan, and Egypt, before emptying into the Mediterranean Sea. The river has two major tributaries: the White Nile, which originates in East Africa, and the Blue Nile, which begins in Ethiopia. The Nile River System is vital for agriculture, providing water to arid regions and supporting the growth of crops like rice and wheat. Its annual flooding historically deposited nutrient-rich silt along the banks, enhancing soil fertility. Today, the river is also crucial for transportation, fishing, and tourism in the surrounding regions.