I’m not trying to change anyone’s mind, just providing information of which people may not be aware.
Lincoln’s Emancipation Proclamation of January 1, 1863 was a powerful move that promised freedom for slaves in the Confederacy as soon as the Union armies reached them, and authorized the enlistment of African Americans in the Union Army. The Emancipation Proclamation did not free slaves in the Union-allied slave-holding states that bordered the Confederacy. Since the Confederate States did not recognize the authority of President Lincoln, and the proclamation did not apply in the border states, at first the proclamation freed only slaves who had escaped behind Union lines. Still, the proclamation made the abolition of slavery an official war goal that was implemented as the Union took territory from the Confederacy. According to the Census of 1860, this policy would free nearly four million slaves, or over 12% of the total population of the United States
Post 30 Ref: Wikipedia: Slavery in the United States