Fourth Fitna 811–813 CE (1 gen 811 anni – 1 gen 813 anni)

Descrizione:

Conflict between Caliph al-Amin and his brother al-Ma'mun over the succession of their father, Caliph Harun al-Rashid.

Al-Ma'mun’s victory consolidated Abbasid rule, but the caliphate’s central authority began to weaken.

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