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