High

Fourth Fitna

Abbasid civil war between al-Amin and al-Mamun that shifted power toward Khurasani military networks.

Timeline
811-819 CE
Duration
9 years
Region
Middle East
Record
Static archive

Historical overview

Overview adapted from a Wikipedia summary and stored locally on May 11, 2026.

The Fourth Fitna was an Abbasid civil war between al-Amin and al-Mamun. It damaged Baghdad and shifted caliphal politics toward eastern military and administrative networks.

Theater countries

IraqIranSyria

Actors

al-Aminal-MamunAbbasid factions

Tags

civil-warcaliphateabbasid

Border context

751-999historical border era

Regional empires and frontier worlds

Carolingian, Byzantine, Abbasid, Tang and Viking-era conflicts shape medieval regional frontiers.

Viking expansion changes North Atlantic politics. Tang China and Abbasid power both face internal military crises.

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