did not outlaw slavery in any northern states, border states or other parts of US that were under Union control - only places "in rebellion"1. Lincoln did not have Constitutional authority to outlaw slavery in US2. So proclamation only freed slaves in places outside of US control - only about 1 percent of slaves, and even that US couldn't enforce b/c US wasn't in control of those placesii. Allowed southern states to rejoin Union without giving up slavery ili. But had effect of finally declaring Civil War was, for the Union, a war againstslavery, not just about secessioniv.Many African Americans joined the Union side of war; hundreds of thousands of slaves became free by escaping to Union lines

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