I will give u brainlist What caused the Mongol Empire to break into separate regions ruled by separate leaders?

Cities around the empire split away and became independent nations.
The economy of the empire fell apart due to a lack of trade and business.
A struggle for power among Genghis Khan’s sons and grandsons led to civil war.
Groups throughout the empire built armies and overthrew the Mongols.

the empire began to split due to wars over succession, as the grandchildren of Genghis Khan disputed whether the royal line should follow from his son and initial heir ogedei or from one of his other sons.

Explanation:

they were byzantines

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