yyad rule in the East, and many Berbers were attracted by the sect's egalitarian precepts. For example, according to Kharijism, any suitable Muslim candidate could be elected caliph without regard to race, station, or descent from the Prophet Muhammad.After the revolt, Kharijites established a number of theocratic tribal kingdoms, most of which had short and troubled histories. Others, hhowever, like Sijilmasa and Tilimsan, which straddled the principal trade routes, proved more viable and prospered. In 750 the Abbasids, who succeeded the Umayyads as Muslim rulers, moved the caliphate to Baghdad and reestablished caliphal authority in Ifriqiya, appointing Ibrahim ibn Al Aghlab as governor in Al Qayrawan. Although nominally serving at the caliph's pleasure, Al Aghlab and his successors ruled independently until 909, presiding over a court that became a center for learning and culture.Just to the west of Aghlabid lands, Abd ar Rahman ibn Rustum ruled most of the central Maghrib from Tahirt, southwest of Algiers. The rulers of the Rustumid imamate, which lasted from 761 to 909, each an Ibadi Kharijite imam, were elected by leading citizens. The imams gained a reputation for honesty, piety, and justice. The court at Tahirt was noted for its support of scholarship in mathematics, astronomy, and astrology, as well as theology and law. The Rustumid imams, however, failed, by choice or by neglect, to organize a reliable standing army. This important factor, accompanied by the dynasty's eventual collapse into decadence, opened the way for Tahirt's demise under the assault of the Fatimids.In the closing decades of the ninth century, missionaries of the Ismaili sect of Shia Islam converted the Kutama Berbers of what was later known as the Petite Kabylie region and led them in battle against the Sunni rulers of Ifriqiya. Al Qayrawan fell to them in 909. The Ismaili imam, Ubaydallah, declared himself caliph and established Mahdia as his c...
