D) Gettysburg. It was the most high casualty rated battle of the war. After that battle, the Confederates lost every battle of the war because they lost an enormous amount of replaceable men in that battle.
The correct answer is D) Gettysburg, where a significant Union victory occurred from July 1 to July 3, 1863. This battle included the famous Pickett's Charge, which resulted in heavy Confederate losses. It marked a pivotal turning point in the Civil War, preventing further Confederate invasions into the North.
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