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
Nayan (Mongol Prince) support Nayan's rebellion, Kaidu remained a potent threat for the remainder of Kublai Khan's life. Kublai chose not to regard Nayan's Nestorian Christian co-religionists as guilty by association, and refused to allow them to suffer any level of persecution within his lands. In the wake of the suppression of Nayan's rebellion, Kublai Khan was able to begin to fully incorporate the lands and peoples previously dominated by the appanage princes into his domain. Nayan (Mongol Prince) Nayan was a prince of the Borjigin royal family of the Mongol Empire. He raised a noteworthy and serious rebellion against the Mongolian Khagan,