Name the longest river in the world.

The Nile River is considered the longest river in the world, stretching about 6,650 kilometers (4,130 miles) through northeastern Africa. Its source is in Burundi, and it flows northward through several countries, including Uganda, Sudan, and Egypt, before emptying into the Mediterranean Sea.

This river has historically been significant for the civilizations that developed along its banks, particularly ancient Egypt, as it provided vital resources such as water, fertile land for agriculture, and a means of transportation. While other contenders for the title of the longest river, such as the Amazon and Yangtze, have been the subject of debates due to differing methods of measurement and definitions, the Nile consistently ranks as the longest based on most geographical sources.

In recent years, some claims have been made regarding the Amazon being longer depending on which tributaries are included in the measurement; however, traditionally and according to many geographical studies, the Nile retains its status as the longest river. The Mississippi River, although significant in the United States, is much shorter than both the Nile and the Amazon, making it not a contender for the title of the longest river in the world.