The River Nile is one of the longest rivers in the world, stretching about 6,650 kilometers (4,130 miles). It flows through northeastern Africa, primarily through Egypt and Sudan, before emptying into the Mediterranean Sea. The river has two main tributaries: the White Nile, which originates in East Africa, and the Blue Nile, which begins in Ethiopia. The Nile has been crucial for agriculture and civilization in the region for thousands of years. Its annual flooding deposited nutrient-rich silt along its banks, allowing ancient cultures, such as the Ancient Egyptians, to thrive. Today, the river continues to support millions of people and is vital for irrigation and transportation.