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
Mongol invasions of Georgia the Golden Horde and Hulagu Khan of the Ilkhanate. Part of the larger Toluid Civil War succession conflict between Kubilai and Ariq Böke, the war consisted mainly of raids and invasions carried out by both sides throughout the Caucasus region, with Berke enlisting the aid of the Mamluk Sultanate and Hulagu the aid of the Byzantine Empire. Neither side gained a real advantage, and the conflict ceased after the victory of Kublai and his enthronement as Great Khan. Mongol rule in the Caucasus lasted until the late 1330s. Greater Armenia stayed under Mongol lordship from 1220 to 1344. During that