The Emancipation Proclamation (1863)

Lincoln's Emancipation Proclamation freed enslaved people only in Confederate states — not in the border states that remained in the Union. This targeted scope is even narrower than the British Slavery Abolition Act of 1833, which eliminated slavery throughout the empire. Critics at the time called it a cynical war measure that freed no one Lincoln actually controlled. Defenders argue it transformed the Civil War from a fight to preserve the Union into a moral crusade against slavery, enabling the recruitment of 180,000 Black soldiers and making abolition an irreversible war aim.