Mongol conquest of the Song dynasty Mongol conquest of the Song dynasty The Mongol conquest of the Song dynasty under Kublai Khan (r. 1260–1294) was the final step for the Mongols to rule the whole of China under the Yuan dynasty. It is also considered the Mongol Empire's last great military achievement. Before the Mongol–Jin War escalated, an envoy from the Song dynasty arrived at the court of the Mongols, perhaps to negotiate a united offensive against the Jin dynasty, who the Song had previously fought during the Jin–Song Wars. Although Genghis Khan refused, on his death in 1227 he bequeathed a plan to attack the
Kublai Khan essence of multiculturalism were Mongols, Semu, Koreans, Hui and Chinese people. Because the Wokou extended support to the crumbling Song dynasty, Kublai Khan initiated invasions of Japan. The court of Goryeo supplied Korean troops and an ocean-going naval force for the Mongol campaigns. Despite the opposition of some of his Confucian-trained advisers, Kublai decided to invade Japan, Burma, Vietnam, and Java, following the suggestions of some of his Mongol officials. He also attempted to subjugate peripheral lands such as Sakhalin, where its indigenous people eventually submitted to the Mongols by 1308 after Kublai's death. Kublai Khan twice attempted to invade