Which of the following best illustrates how the Battle of Antietam affected President Lincoln’s view of the war?

Lincoln had been waiting for a Union military success before announcing the Emancipation Proclamation, so it would not appear to be an act of desperation. The Union’s result at Antietam gave him the opportunity to issue the preliminary proclamation in September 1862. Thus, the battle encouraged Lincoln to issue the Emancipation Proclamation.

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