Question

the battle of vicksburg was significant because the north could not access its railroads after its defeat. the south lost control of the mississippi river. union troops were forced to retreat to the northern capital. lincoln was forced to issue the emancipation proclamation.

Explanation:

The Battle of Vicksburg gave the Union control of the Mississippi, splitting the Confederacy and was a major strategic victory.

Answer:

The South lost control of the Mississippi River.