Antietam (Sharpsburg) in September 1862.
After, it allowed Lincoln to issue the Emancipation Proclamation
While it wasn't immediately following, the Battle of Antietam and the Union victory there gave President Lincoln the push to issue the proclamation. The Emancipation Proclamation was issued on January 1, 1863.
Lincoln waited until after the Battle of Antietam to issue the Emancipation Proclamation because he wanted to wait for a Union victory to give the proclamation more credibility and show that the Union was in a stronger position.
The great battle of Gettysburg NEW RESPONDENT The Battle of Antietam.
It was the unexpected Northern win at Antietam that enabled Lincoln to issue the Emancipation Proclamation without making it look like a desperate measure.
The Union Army's victory at the Battle of Sharpsburg (Antietam) gave Lincoln the confidence.
Antietam
To Free the Slaves
Lincoln issued the Emancipation Proclamation after the Battle of Antietam to shift the focus of the Civil War from just preserving the Union to also include the abolition of slavery. The victory at Antietam provided the political momentum and military opportunity for Lincoln to make this significant decision.
It gave Lincoln the credibility to issue the Emancipation Proclamation without making it sound like a desperate measure.
The Emancipation Proclamation