The Mongol InvasionsMilitary
Genghis Khan invades China
The united Mongols under Genghis Khan storm across the Great Wall into the Jin realm of north China.
Having united the steppe tribes in 1206, Genghis Khan turned his cavalry on the settled empires to the south. His campaigns against the Jurchen Jin brought terror and devastation but also engineers and administrators into Mongol service, beginning the long conquest that his heirs would complete.

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