Mongol Empire What is referred to in English as the Mongol Empire was called the "Ikh Mongol Uls" ("ikh": "great", "uls": "state"; Great Mongolian State). In the 1240s, one of Genghis's descendants, Güyük Khan, wrote a letter to Pope Innocent IV which used the preamble "Dalai (great/oceanic) Khagan of the great Mongolian state (ulus)". After the succession war between Kublai Khan and his brother Ariq Böke, Ariq limited Kublai's power to the eastern part of the empire. Kublai officially issued an imperial edict on 18 December 1271 to name the country Great Yuan ("Dai Yuan", or "Dai Ön Ulus") to establish 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