The river that flows through the city of Cairo is the Nile. It is considered one of the longest rivers in the world, spanning approximately 6,650 kilometers. The Nile has played a crucial role in Egypt's history, civilization, and agriculture. The river supports the majority of Egypt's population, providing water resources for irrigation, drinking, and transportation. Both the Blue Nile and White Nile are major tributaries that converge near Khartoum, Sudan, ultimately flowing northward through Egypt before emptying into the Mediterranean Sea. The historical significance of the Nile dates back thousands of years.