Crusades are military campaigns which occured between 11th and 13th century. The Crusades were lead on the territory of Middle East with the goal of restoring Christian access to the holy places in and near Jerusalem, conquer rich East and open trade with eastern countries. Papacy achieved its most permanent success with Crusades. Crusaders developed deep national feeling for Passions of Christ and hatred towards Muslems, Greeks, Jews and heretics. Success of the Crusades should have reflected in new Jerusalim Kingdom which should have made peace with all fighting people and rise in the age of abundance which would exist before Judgement Day. Crusaders made an important connection between the people of Western Europe, Byzantium and Balkans and the existance of crusader states made formal and informal contacts with illegal dualist bogomil churches in Constantinople, Asia Minor and Balcans much easier.