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
Mongol invasions of Vietnam third invasions occurred during the reign of Kublai Khan of the Yuan Dynasty. By this point, the Mongolian Empire had fractured into 4 separate entities with Yuan Dynasty being the strongest and biggest empire. These invasions resulted in a disastrous land defeat for the Mongols in 1285 and the annihilation of the Mongol navy in 1288. However, both the Trần dynasty and Champa decided to accept the nominal supremacy of the Yuan dynasty and serve as tributary states in order to avoid further conflicts. By the 1250s, the Mongol Empire controlled large amounts of Eurasia including much of Eastern Europe,