As a result of the union and confederate casualties during the battle of gettysburg,

Weakened Lee’s army for the rest of the war.

Explanation:

The Battle of Gettysburg is considered to be one of the bloodiest war in American history because of its enormous casualties on both sides. Confederate suffered about 28,063 casualties. With the Union defeating the Confederate led to serious damage for Lee's army and the South to gain independence.

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in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: