How did the battle of antietam represent an important turning point in the civil war?

After twelve hours of combat, the roar of battle started to fade away. ... Most importantly, Union victory at Antietam provided President Abraham Lincoln the opportunity he had wanted to announce the Emancipation Proclamation, making the Battle of Antietam one of the key turning points of the American Civil War.

Explanation:

there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.

the answer would be c epic   an epic is a long narrative poem about a heroic figure