Kingdom of Dali
Despite the death of Genghis, the Mongol Empire was at last successful in defeating Western Xia. Now, Genghis Khan's successors concentrated on unifying the rest of China. The Jin dynasty, already reeling from great losses of land and troops due to the ongoing Mongol campaign since 1211, finally collapsed in 1234. The Kingdom of Dali in southwest China fell in an invasion in 1253, and the Song dynasty of southern China, after over four decades of a conflict begun 1235, surrendered in 1279.