Pope military aid from Pope Urban II in the ongoing Byzantine–Seljuq wars. Urban, at the council of Clermont, called the First Crusade to assist the Byzantine Empire to regain the old Christian territories, especially Jerusalem. With the East–West Schism, the Eastern Orthodox Church and the Catholic Church split definitively in 1054. This fracture was caused more by political events than by slight divergences of creed. Popes had galled the Byzantine emperors by siding with the king of the Franks, crowning a rival Roman emperor, appropriating the Exarchate of Ravenna, and driving into Greek Italy. In the Middle Ages, popes struggled with
Roman Catholic Diocese of Le Puy-en-Velay to the Bishops of Le Puy, also granting them the right, until then reserved to archbishops exclusively of wearing the pallium. "Nowhere", he said in his Bull, "does the Blessed Virgin receive a more special and more filial worship." It was from Le Puy that Pope Urban II dated (15 August 1095) the Letters Apostolic convoking the Council of Clermont, and it was a canon of Le Puy, Raymond d'Aiguilles, chaplain to the Count of Toulouse, who wrote the history of the crusade. Pope Gelasius II, Pope Callistus II, Pope Innocent II and Pope Alexander III visited Le Puy to