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It was to protect China from the invasion of the Xiongnu people from Mongolia. The Xiongnu tribe was China's main enemy at that time. The Chinese built the Great Wall to prevent them from entering and conquering China. Originally made up of shorter walls between factions, the wall was fortified and lengthened under the emperor Qin Shi Huang beginning in 221 BC.

Odyssey Cheaters;) lol

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13y ago

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