Pope Urban II that was caused by the Great Schism of 1054. Others believe that Urban saw this as an opportunity to gain legitimacy as the pope as at the time he was contending with the antipope Clement III. A third theory is that Urban felt threatened by the Muslim incursions into Europe and saw the crusades as a way to unite the christian world into a unified defense against them. The most important effect of the First Crusade for Urban himself was the removal of Clement III from Rome in 1097 by one of the French armies. His restoration there was supported
History of the papacy (1048–1257) held the possibility of a reunion between the eastern and western Churches after almost four decades of schism, thereby strengthening the western Church in general and the papacy in particular. On November 27, 1095, Urban II made one of the most influential speeches in the Middle Ages at the Council of Clermont combining the ideas of making a pilgrimage to the Holy Land with that of waging a holy war against infidels. The pope called for a “War of the Cross,” or Crusade, to retake the holy lands from the unbelievers. France, the pope said, was already overcrowded and the