Why was the Union victory at Vicksburg significant?

• It allowed the Union to take a defensive position and ensure the Confederate arry could not invade the North.
• It boosted Union morale and allowed Sherman to end his March to the Sea.
• It allowed the Union to take control of the Mississippi River and split the Confederacy in half.
• It boosted Union morale and allowed the Union to go on to victory in the Battle of Shiloh.

The most significant reason for the Union victory at Vicksburg was that it allowed the Union to take control of the Mississippi River and split the Confederacy in half. This strategic victory cut off vital supply lines for the Confederacy and severely weakened their ability to wage war effectively. Additionally, it gave the Union control of a major transportation route and allowed them to further isolate Confederate forces in the western theater of the war.