The Rise and Decline of the Muslim Civilization 39 advance of the barbarous condition of contemporary Paris or London, and was the cultural metropolis for the Christian rulers of the petty states of Northern Spain. Nevertheless, the intellectual tone in Muslim Spain was still one of rigid orthodoxy and strict conservatism. There was scant sympathy with the rationalist in- novations of some of the Abbasid caliphs, and little evidence yet of intellectual originality. Both Muslims and Jews wishing to com- plete their education went to the Eastern Mediterranean and on to Iraq. In the first half of the ninth century, however, the Umayyad Abd ur-Rahman II sent a scholar to Iraq to obtain copies of trans- lations of Greek and Persian scientific works, and surrounded him- self with a group of astronomers.1 A century later the University of Cordoba was founded by Abd ur-Rahman III, who proclaimed himself Caliph independently of the Abbasids. His successor in- vited professors to Cordoba from the East, established twenty- nine free schools in the city, and employed agents to buy learned manuscripts in the eastern cities. At the same time the centre of Jewish scholarship began to be transferred from Iraq to Spain. Early in the eleventh century the Umayyad dynasty collapsed, and for eighty years Spain was torn by civil wars, with Muslim military commanders playing the same role as they had done in the East when the Abbasid dynasty fell into decline. But just as in the East, the partitioning of the caliphate among provincial rulers led to the diffusion of the culture of the metropolis over a number of pro- vincial capitals, such as Seville, Toledo, and Granada. And as the Christian kingdoms of Northern Spain seized the opportunity to invade the disunited Muslim state, so they began increasingly to absorb Muslim cultural influences. The Muslims, finding themselves hard-pressed by the aggressive Christians in the north, appealed for help to the Berbers of North- West Africa, who had been united for the last fifty years in a mili- tant Muslim brotherhood, al-Murabitun (whence their Spanish name of Almoravides). At the end of the eleventh century these defeated the Christians under their legendary leader the Cid, but remained in Spain as the ruling Muslim dynasty, only to succumb to its luxuries. Meanwhile another Puritan movement, al-Muwah- hidun (Almohades in Spanish) had arisen among the Berbers. These overthrew the Almoravides in the middle of the twelfth century and replaced them as rulers of an empire extending from 1 E. Levi-Proven£al, La Civilisation arabe enEspagne (Cairo, 1938), 65. D