Longest river in the world
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Amazon
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Yangtze
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Nile
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Huang He
C
Correct answer
Explanation
The Nile River is traditionally considered the longest river in the world at approximately 6,650 km. The Amazon River is a close second, and some recent measurements suggest it might be longer, but the Nile remains the accepted answer in most contexts. The Yangtze and Huang He are significantly shorter.