All of these profound material shocks heightened the impact of the wrenching postwar political changes, which obliged people to rethink long-standing senses of identity. By the end of the fighting, people in Palestine and in much of the Arab world found themselves under occupation by European armies. After four hundred years, they were confronted by the disconcerting prospect of alien rule and the swift disappearance of Ottoman control, which had been the only system of government known for over twenty generations.