Al-Mutamid

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.