The Emancipation ProclamationEven though sectional conflicts over slavery had been a major cause of the war, ending slavery was not a goal of the war. That changed on September 22, 1862, when President Lincoln issued his Preliminary Emancipation Proclamation, which stated that slaves in those states or parts of states still in rebellion as of January 1, 1863, would be declared free. One hundred days later, with the rebellion unabated, President issued the Emancipation Proclamation declaring "that all person held as slaves" within the rebellious areas "are, and henceforward shall be free."