EMC3 | The Walls of Benin City was the world's largest man-made earth structure.
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Interesting Facts: 10 of the Biggest Man-made Structures Ever Built
Interesting Facts: 10 of the Biggest Man-made Structures Ever Built
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Interesting Facts: 10 of the Biggest Man-made Structures Ever Built
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Interesting Facts: 10 of the Biggest Man-made Structures Ever Built
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Interesting facts about the Great Walls of Benin in Nigeria, one of the world's largest man-made earth structures - Face2Face Africa
