Answer:
what battle caused lincoln to issue the emancipation proclamation
Explanation:
The battle of Antietam, was the first great armed confrontation of the American civil war that took place in northern territory, which took place on September 17, 1862.
The battle was part of the Maryland Campaign and is the bloodiest in the history of the United States that was fought in a single day, with almost 23,000 casualties.
The answer is: The battle of Antietam.
