Abstract
Abstract The study deals with the accurate search of the new factors that were thereal cause of the movement of thousands of human mass from the western Europe (490 AH / 1096 AD) under religious titles, influenced by the various Western strata of the European society under the slogan "Savmg the tomb of Jesus Christ." These conquests were later known as the Crusades and led to the occupation of many Arab and Islamic cities including Jerusalem the second largest shrine of Islam following Mecca, lt is wortl to know that most of the eastern and Westerners historians focused on the political religious economic, social factors.
)