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| Longest river in the world |
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| Center of ancient Egyptian civilization |
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| Second longest river in the world |
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| Largest river in the volume of water it carries |
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| Second largest river in the volume iof water it carries |
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| Third longest river in the world |
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| Longest and most important river in China |
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| Center of ancient Chinese civilization |
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| Center of the earth's earliest civilizations, in Mesopotamia |
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| Center of an ancient civilization in India |
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| Second longest river in Europe |
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| Europe's most important inland waterway |
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| Longest river in North America |
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