Fragmentation of Moghulistan in the 1430s

Timeline

1. 1431–1436Eastern Moghulistan · MoghulistanIsan Buqa II maintained the khanate on the steppes east of the Turfan–Hami line, but central authority waned and subject tribes grew restive; ties between eastern Moghulistan and the Western Regions oasis zone weakened, and khanate rule became increasingly regionalized and tribalized.
2. 1433–1438Kashgar–Ili Valley · Western RegionsWith Timurid support, Yunus Khan expanded his power in the Western Regions oases and the Ili region, clashing with Isan Buqa II and local begs; rival claimants to the khanate from east and west coexisted, and the khanate's nominal unity but actual division took shape by the mid-1430s.
3. 1438–1440Various places north and south of the Tianshan · Tianshan regionBy 1440, Moghulistan had settled into a pattern of an eastern steppe khanate court facing western oasis powers, with local begs gaining autonomy; central khanal authority existed in name only, laying structural groundwork for Yunus Khan's brief reunification and renewed division, as well as later changes in the Ming dynasty's Western Regions tributary system.