The river known as the "Lifeblood of Egypt" is the **Nile River**. This iconic river is the longest in the world, flowing through several countries in northeastern Africa before emptying into the Mediterranean Sea. The Nile has been crucial to the development of Egyptian civilization for thousands of years, providing water for agriculture and sustenance. Its annual floods deposited nutrient-rich silt along the banks, enabling the growth of fertile farmland. The Nile is not only integral to Egypt's economy but also serves as a significant cultural and historical symbol for the Egyptian people.