What is the longest river in the world?
The longest river in the world is the Nile River, located in northeastern Africa. It stretches approximately 4,135 miles (6,650 kilometers) in length. The Nile River is considered the longest based on its traditional source, the White Nile, originating in Burundi, and its primary stream, the Blue Nile, which starts in Ethiopia. The river flows through multiple countries, including Uganda, South Sudan, Sudan, and Egypt before emptying into the Mediterranean Sea. The Nile River has played a crucial role in the development of ancient civilizations and continues to be a vital waterway for transportation, agriculture, and commerce in the region.