Decline of the Byzantine Empire of its territory in Asia Minor, and was in immediate danger of complete annihilation. It recovered following the Komnenian restoration, as Alexios I Komnenos restored relations with the Papacy, and requested aid against the Turks from Pope Urban II at the Council of Piacenza in 1095. Later that same year, the pope preached the First Crusade at the Council of Clermont. In the wake of the success of the First Crusade, the three competent Komnenian emperors, especially Manuel I Komnenos (r. 1143–1180), may have had the power to expel the outnumbered Seljuks, several factors combined to ensure that they never
Pope Urban II Ravenna who held Rome as the antipope "Clement III". Gregory had repeatedly clashed with the emperor Henry IV over papal authority. Despite the Walk to Canossa, Gregory had backed the rebel Duke of Swabia and again excommunicated the emperor. Henry finally took Rome in 1084 and installed Clement III in his place. Urban took up the policies of Pope Gregory VII and, while pursuing them with determination, showed greater flexibility and diplomatic finesse. Usually kept away from Rome, Urban toured northern Italy and France. A series of well-attended synods held in Rome, Amalfi, Benevento, and Troia supported him in renewed