Question: how did the battle of antietam represent an important turning point in the civil war

title: Turning point of the American Civil War
text: The Battle of Antietam , fought September 17 , 1862 , was the bloodiest single day of conflict in American military history . But it also had two strategic consequences . Although considered a tactical draw between the Army of the Potomac and the much smaller Army of Northern Virginia , it marked the end of Robert E. Lee 's invasion of the North . One of his goals was to entice the slave - holding state of Maryland to join the Confederacy , or at least recruit soldiers there . He failed in that objective ; he also failed in marshaling Northern fears and opinions to pressure a settlement to the war . 

Answer: answer: The Battle of Antietam, fought September 17, 1862, was the bloodiest single day of conflict in American military history. It marked the end of Robert E. Lee's invasion of the North to entice the slave holding state of Maryland to join the Confederacy, or at least recruit soldiers there. He failed in that objective; he also failed in marshaling Northern fears and opinions to pressure a settlement to the war.