Caliphate of Córdoba
Beginning in the ninth century, Abbasid sovereignty was contested in the provinces furthest removed from the Iraqi center. The creation of an Ismaʻili Shiʻi dynasty, that of the North African Fatimid Caliphate, followed by the Caliphate of Córdoba in the Iberian Peninsula, gave force to this opposition, as well as small dynasties and autonomous governors in Iran.