The Confederacy was split in half after losing the Battle of . A. Gettysburg
B. Atlanta
C. Savannah
D. Vicksburg

D. Vicksburg

Explanation:

Vicksburg was the last major Confederate stronghold on the Mississippi River; therefore, capturing it completed the second part of the Northern strategy. After holding out for more than forty days, with their supplies nearly gone, the garrison surrendered on July 4. The successful ending of the Vicksburg campaign significantly degraded the ability of the Confederacy to maintain its war effort.

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