Abstract: Since the end of the fifth century AH, the eleventh century AD, the Islamic East has witnessed a major historical event, which is the Crusader aggression against large parts of Muslim countries. Within a few years, the Crusaders were able to seize a number of Islamic cities and villages, where they established four main Crusader entities (Edessa, Antioch, Tripoli). Jerusalem), and that was in a short period of time, and this event was a great shock to Muslims.