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337
Roman Emperor Constantine I converted to Christianity
Did not want nations to engage in wars for religious conversion -
622
Mohammed Founds Islam and Travels from Mecca to Medina
Islam became faith and government. Muslims entangled religion with war, called jihad. -
732
Battle of Tours
Frankish leader Charles Martel defeated the Muslims -
1071
Battle of Manzikert
Emperor Romanus IV arrayed forces against the Turks on the Asia Minor -
Period: 1075 to 1122
Investiture Controversy
Struggle between Pope Gregory VII and King Henry IV over the legitimacy and authority of the papacy. Gregory excommunicates Henry, thus leading to a fight for the throne. -
Nov 27, 1095
Pope Urban II Preached the First Crusade
Called for the knights of Christ to take up a war of liberation to reclaim Jerusalem from the Muslims. Constantinople was on the way, free that area for the East.