Question

which civil war resulted in the union gaining strategic control of the mississippi river?

Answer 1

The American Civil War is your answer

Also, this battle is the battle of Vicksburg

hope this helps

Answer 2

Vicksburg During the Civil War (1862-1863): A Campaign; A Siege. WhenVicksburg fell to Union troops on July 4, 1863, the Confederacy lost its last chance to control the Mississippi River.