The longest river in the world is the Nile River , which stretches approximately 6,650 Kilometers ( 4,130 miles) in length .It flows through northeastern Africa , primarily through Egypt and Sudan, and has been historically significant for the civilization along its banks.

Nile River is that it was crucial for the development of ancient Egyptian civilization .The annual flooding of the Nile deposited nutrient -rich silt onto the riverbanks , creating fertile soil for agriculture. This allowed Egyptians to thrive and develop one of the most advanced civilizations in history. The Nile river is not only the longest river in the world , but it also holds a unique distinction as the only major river that flow from south to north . It originates from Lake Victoria in Uganda , flowing through multiple countries in northeastern Africa , including Sudan and Egypt , before emptying into the Mediterranean Sea . This northward flow defies the typical direction of river systems , adding to the intrigue and importance of the Nile throughout history.