Multiple choice Result of the Emancipation Proclamation slave in the union and the confederacy were declared free Maryland seceded from the union 200,000+ free blacks joined the Union Army African Americans in the U.S. received the right to vote Reveal answer Fill a bubble to check yourself C Correct answer Explanation The Emancipation Proclamation allowed for the recruitment of African American soldiers into the Union Army, and over 200,000 eventually served, significantly bolstering the Union war effort.