In the seventh century, Mohammed had begun to spread his doctrines among the Arabian tribes. He preached conversion by the sword. A large part of Asia, North Africa, Spain and the islands of the Mediterranean were overrun and conquered to Mohammed’s Allah. At last, Islam broke into France.
In the eleventh century, Jerusalem was captured by the Muslims. This brought about the Crusades, during which Christian armies went to free the Holy Places from the infidels. There were seven Crusades in all; from 1095 A.D., to 1254 A.D. Some of the outstanding leaders of the Crusades were: Godfrey de Bouillon, Frederick Barbarossa, Richard the Lionheart and Saint Louis of France.