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from | Encarta |  |
Portion of the Great Wall |
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| In the 15th and 16th centuries the Ming dynasty built elaborate earth-and-stone fortifications along China’s northern border. Although the Great Wall followed the contours of the land, it actually provided poor defense against Mongol challengers, who were able to pass around or break through the walls during raids. | ||||||
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| Keren Su/Corbis | ||||||
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| Appears in these articles: | ||||||
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| Exploration, Geographic; Ming Dynasty | ||||||
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