On what date did Abraham Lincoln’s Emancipation Proclamation take effect?

Abraham Lincoln’s Emancipation Proclamation took effect on January 1, 1863.

Lincoln issued the preliminary proclamation on September 22, 1862, after the Union victory at Antietam. It warned that enslaved people in areas still rebelling against the United States would be declared free unless those states returned to the Union.

The final proclamation named the rebellious areas and changed the Civil War’s official Union war aim by linking victory to emancipation. It did not apply to loyal slave states or to Confederate areas already under Union control, so it did not instantly end slavery everywhere.

The proclamation also authorized Black men to serve in the Union Army and Navy. More than 180,000 African American soldiers eventually served in the Union Army. The Thirteenth Amendment, ratified in 1865, abolished slavery throughout the United States.