A CAUSE of the First Crusade was the __________. a.conquest of Constantinople by the Ottoman Turks b.invasion of Spain by the Muslim Arabs c.attack by the Muslims on Rome d.conquest of Asia Minor by the Seljuk Turks
A cause of the First Crusade was the invasion of Spain by Muslim Arabs. The first crusade lasted from 1096 to 1099 and was regarding the capture of Jerusalem.
