Why did the First Crusade occur?


A)The pope called for the destruction of the Eastern Orthodox church at Constantinople.



B)European merchants wanted to establish trading outposts in Muslim territories of the Middle East.



C)When the Seljuk Turks took control of the Holy Land, it became more dangerous for Christians to travel there.



D)Muslim caliphs wanted to overthrow the Jewish kingdom that had been established in Palestine. Please answer! Will mark brainlest! Please! :,(