I believe that the Mongols were unhappy with Kublai Khan's rule because Kublai Khan's Chinese governance, centralized control, and high taxation policies, which the Mongols felt violated their identity and placed an enormous burden on them.

One reason that I know they were unhappy with his leadership is
because Kublai Khan's attempts to impose his authority over several Mongol nobility and military clans were met with resistance, as documented by historical accounts, which resulted in multiple uprisings and violent clashes during his rule. Furthermore, many Mongols who considered themselves to be separate from the Chinese people were alienated by the imposition of Chinese governmental structures and cultural assimilation initiatives. As a result, the Mongol people's support and allegiance to Kublai Khan and his reign gradually decreased..

According to the article, the Mongols tried to invade japan and it became one of the most famous events in history.

This shows ________________ about Kublai Khan's rule and supports my opinion that Kublai Khan was a ______________ ruler.

This shows that Kublai Khan's attempts to expand his empire and exert control over other territories led to significant challenges and resistance, indicating that he may have been viewed as a tyrannical or oppressive ruler by those who opposed his rule.