What is the longest river in the world?

The Nile River is historically recognized as the longest river in the world, with a length of about 6,650 kilometers (4,130 miles). This river flows through several countries in northeastern Africa, including Uganda, Sudan, and Egypt. It has played a significant role in the history and development of the civilizations that have settled along its banks, providing water, fertile land, and trade routes. Its importance to agriculture and transportation has made it a critical lifeline for the regions it traverses.

While recent studies and measurements have suggested that the Amazon River could potentially rival or even exceed the Nile's length when different tributaries are considered, the conventional understanding and historical documentation still favor the Nile as the longest river.

The other rivers mentioned have notable lengths and significance, but none match the Nile for this particular classification. The Yangtze River, for example, is the longest river in Asia but does not surpass the Nile. Similarly, the Mississippi River is a major river in the United States, but it is substantially shorter than both the Nile and the Amazon. Thus, the identification of the Nile River as the longest river is grounded in both historical context and geographical measurement.