Kaidu–Kublai war

Kaidu, the leader of the Mongol House of Ögedei, fought a war against Kublai Khan and his successor Temür from 1268 to 1301. Kaidu was the de facto khan of the Chagatai Khanate, while Kublai was the founder of the Yuan dynasty. The Kaidu–Kublai war followed the Toluid Civil War (1260–1264) and resulted in the permanent division of the Mongol Empire. By the time of Kublai's death in 1294, the Mongol Empire had fractured into four separate polities: the Golden Horde khanate in the northwest, the Chagatai Khanate in the middle, the Ilkhanate in the southwest, and the Yuan dynasty in the east based in modern-day Beijing. Although Temür later made peace with the three western khanates in 1304 after Kaidu's death, the four successor states of the Mongol Empire continued their own separate development and fell at different times.