Mongol Empire his generals and other associates, and some Mongols who had previously been allies broke their allegiance. War ensued, and Temujin and the forces still loyal to him prevailed, defeating the remaining rival tribes between 1203 and 1205 and bringing them under his sway. In 1206, Temujin was crowned as the khagan of the "Yekhe Mongol Ulus" (Great Mongol State) at a kurultai (general assembly/council). It was there that he assumed the title of Genghis Khan (universal leader) instead of one of the old tribal titles such as Gur Khan or Tayang Khan, marking the start of the Mongol Empire. Genghis
Division of the Mongol Empire The transition of the capital of the Mongol Empire to Khanbaliq (Dadu, modern-day Beijing) by Kublai Khan in 1264 was opposed by many Mongols. Thus, Ariq Böke's struggle was for keeping the center of the Empire in Mongolia homeland. After Ariq Böke's death, the struggle was continued by Kaidu, a grandson of Ogedei Khan and lord Nayan. By eliminating the Song dynasty, Kublai Khan completed the conquest of China. The fleets of the Yuan dynasty attempted to invade Japan in 1274 and 1281, but both invasion failed, and a large number of their ships were destroyed in sea storms named