Crusades In 1095, Pope Urban II called for the First Crusade in a sermon at the Council of Clermont. He encouraged military support for the Byzantine Empire and its Emperor, AlexiosI, who needed reinforcements for his conflict with westward migrating Turks colonizing Anatolia. One of Urban's aims was to guarantee pilgrims access to the Eastern Mediterranean holy sites that were under Muslim control but scholars disagree as to whether this was the primary motive for Urban or those who heeded his call. Urban's strategy may have been to unite the Eastern and Western branches of Christendom, which had been divided since
Pope Pius II was not an eminent scholar. His Latin was fluent, but he knew little Greek. Still, his writings have many good qualities. Pope Pius II inaugurated an unusual urban project, perhaps the first city planning exercise in modern Europe. He refurbished his home town of Corsignano (province of Siena, Tuscany) and renamed it Pienza, after himself. A cathedral and palaces were built in the best style of the day to decorate the city. They survive to this day. Pope Pius II Pope Pius II (, ), born Enea Silvio Bartolomeo Piccolomini (; 18 October 1405 – 14 August 1464) was Pope