Al-Mutamid vs King Yeonsangun of Joseon

A major slave revolt began in the marshlands of southern Iraq, led by Ali ibn Muhammad. Al-Mutamid's caliphate struggled to suppress the rebellion for over a decade, draining resources and weakening Abbasid authority.

Zanj rebels captured and sacked the city of Basra, massacring its inhabitants. This event demonstrated the inability of Al-Mutamid's forces to protect major urban centers, further eroding caliphal prestige.

Al-Mutamid died, possibly poisoned by his brother and successor Al-Mutadid. His death ended a reign marked by the devastating Zanj Rebellion and the continued fragmentation of Abbasid power.

Yeonsangun ordered the execution and exile of many scholar-officials from the Sarim faction, accusing them of criticizing his rule. This purge intensified factional conflict and established his reputation for tyranny.

Yeonsangun launched a second, more brutal purge, executing hundreds of officials and their families. He targeted those involved in his mother's death and anyone who opposed his excesses, further destabilizing the court.

Yeonsangun abolished the Office of Special Counselors (Hongmungwan) and other advisory bodies, centralizing power in his own hands. This act removed checks on royal authority and allowed his tyranny to go unchecked.

A group of officials and military leaders staged a coup, deposing Yeonsangun and exiling him to Ganghwa Island. He was the first Joseon king to be forcibly removed from power, and his half-brother Jungjong was installed as king.