Final answer:
Succession after Chinggis Khan did not work out as he had hoped, leading to fragmentation of the Mongol Empire and continuous internal conflicts.
Step-by-step explanation:
The succession to the position of great khan after the death of Chinggis Khan did not go as he had planned. His vision of a unified Mongol Empire was undermined by internal conflicts and power struggles amongst his descendants, particularly his grandsons. The Mongol Empire eventually fragmented into separate khanates, each converting to different religions and engaging in conflicts with one another, even those that adopted the same religion like Islam. While Mongke Khan's short reign gave some hope of a rebirth for the empire, it didn't last. His sibling, Kublai Khan, attempted to keep the empire unified during his rule, but after his death, the succession crisis and internal unrest further accelerated the dissolution of the empire.
Adding to the internal strife, the inherently democratic mechanism of succession through a kurultai, as intended by Chinggis Khan to maintain equal say in the selection of each new great khan, could not sustain unity across the diverse and expansive territories conquered. Rivalries and the empire's sheer size presented abundant opportunities for claimants to seek power for themselves. Ultimately, the environment ripe for conquest that once kept these rivalries at bay dimmed, and the Mongol Empire faced inevitable fragmentation, leading to continuous internal conflicts.