During the siege of vicksburg in 1863, the union army a. ran out of ammunition. b. suffered from hunger and thirst. c. lost more troops than the confederacy. d. prevented supplies from entering or leaving.

The correct answer is D) Prevented supplies from entering or leaving.

The Siege of Vicksburg is considered a turning point in the Civil War. Thanks to the Union victory here, the Union now controlled the entire Mississippi River. This was important because the Mississippi River acted as the main source of transportation for Confederate goods, troops, and resources. Along with this, taking over control of the Mississippi River cut the Confederacy in half as states like Texas were now isolated from the Confederate states on the east coast (like South Carolina).