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| Great
Wall - the Ju Yong Pass
Subsequent dynasties continued to extend the wall. In the Han Dynasty (206 B.C.-220 A.D.) about 500 kilometers were added to the west. The Tang Dynasty (618-907 A.D.) expanded its territory and pushed its frontier further north. The last major expansion, which spanned a total of 200 years, took place in the Ming Dynasty (1368-1643 A.D.).
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