The river that flows through Cairo, Egypt, is the Nile River. It is widely regarded as the longest river in the world, stretching about 6,650 kilometers. The Nile has been an essential lifeline for civilizations since ancient times, providing water, transportation, and fertile soil for agriculture. Its annual flooding deposited nutrient-rich silt along its banks, enabling the growth of crops. Today, the Nile continues to be vital for Egypt’s economy and sustains millions of people living along its banks.