The eastern churches remained lively in the eleventh and twelfth centuries, whatever the vicissitudes they experienced. The Byzantine emperors, in the eleventh century, continued to operate within the tradition of the elimination of heresy. The great churches, which had been turned into mosques became cathedrals once more; the number of churches grew, Christian populations were attracted into the reconquered lands. The Latins dispossessed the Greek prelates of their cathedrals and the Greek communities of their pre-eminent position in the sanctuaries. However, they very quickly adapted to the situation of the eastern churches, and made space for each alongside the Latin church, refraining from the harassment which the Byzantines had inflicted on other confessions. The Franks adopted the devotions of the eastern Christians, and the monasteries of each confession were able to prosper. The Latin church of the Maghreb continued to use Latin as its liturgical language and in funerary inscriptions, although the Christians increasingly used Arabic.