Fall of Man
Eastern Orthodoxy believes that a son is not guilty of the sins of his father (so sin is not passed down from Adam). They believe that men and women are forced to sin because of the world around them and thy have to try and resist if they want to go to Heaven. But they still believe that Adam caused all humanity to have to work for this. The emphasis on free will is great: even the sinful people can be saved through synergy with God's grace.