The First Crusade was cause by conflicts between the Christians and the Muslims for the Holy Land, Jerusalem. Jerusalem was the holy city for all three groups of different faiths; the Christians, the Jews, and the Muslims. For the Christians, Jerusalem was where Jesus was crucified and resurrected. For the Muslim, Jerusalem was the place where Muhammad had ascended to heaven. For the Jews, it was their God's city and it was the sit of Solomon's temple. The main idea of the First Crusade was good against evil, in which the crusaders were on the good side and the Muslims and Jews on the evil side; after all they were the one who killed Jesus. The two main leaders that called for the First Crusade were Alexius I, emperor of the Byzantine Empire, and Pope Urban II. The First Crusade was an evil act against Muslims and Jews.
Greed and lack of knowledge mostly caused the First Crusade.
The riches of the East lured many, mostly because younger sons in families lacked economic opportunity. During this time, the church was very corrupted and had split into an eastern and a western organization. To solve this problem, Urban II looked for something that would join all Christians and that is on e of the reasons why he started the First Crusade. Many people returning from the Holy Land were bringing home stories of the violence being committed by the Turks there. Because this was their Holy Land, it caused many Christians to be outraged.
The crusaders existence was established mostly on strong beliefs more than any other reason. The crusaders also brought back the tradition of pilgrimage back to the Holy Land. They consisted of two roles: pilgrims and soldiers. The idea of armed pilgrims weren't accepted, but in this...