Which is the longest river system in the world?
Quick Answer
The Nile is traditionally regarded as the longest river system in the world, at about 6,650 kilometers. Some studies argue the Amazon may be slightly longer depending on measurement method.
The Full Story
The Nile is traditionally listed as the longest river system in the world, with a length of about 6,650 kilometers. It flows through northeastern Africa and empties into the Mediterranean Sea. The river has been crucial to civilizations in Egypt and Sudan for thousands of years. There is some scientific debate because the Amazon’s length can vary depending on which tributaries are included and where the source is defined. Even with that debate, the Nile remains the standard answer in many references.
Key Facts
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"The world’s longest river may not be as settled a fact as you think."