The Crusader period in the history of Jerusalem began in 1109 with the conquest of the city Jerusalem by the First Crusade. Jerusalem became the capital of the Kingdom of Jerusalem, and became Christian after 450 years of Islam. It was a turbulent period in Jerusalem's history, characterized by frequent conquests and rule transitions between the Crusaders and Ayyubid dynasty Muslim. These turmoils did not spare the Jewish community of Jerusalem, who, despite difficult circumstances, struggled amid the waves of death and destruction and began to rebuild the fallen city.