The answers are Vicksburg and Gettysburg.
Vicksburg and Gettysburg
The two Union victories that further weakened the Confederacy were the Battles of Vicksburg and Gettysburg. Vicksburg's capture gave the Union control over the Mississippi River, while Gettysburg marked a crucial turning point in the war. Together, these victories significantly diminished the Confederate Army's morale and military strength.
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