President lincoln issued the emancipation proclamation in response to

a: the union victory based on the anaconda plan.
b: the confederate victory at the battle of antietam.
c: the confederate victory at the first battle of bull run.
d: the union victory at the battle of antietam.

President Lincoln issued the Emancipation Proclamation in response to the Union victory at the Battle of Antietam. Option D is correct.

On September 22, right after the Union victory at Antietam, President Lincoln  issued a preliminary Emancipation Proclamation, declaring that as of January 1, 1863, all slaves in the rebellious states “shall be then, thenceforward, and forever free." It was considered an important turning point in the war, transforming the fight to preserve the nation into a battle for human freedom.

D

Explanation:

i see, would you mind putting it as one?