Its not much but, C IS NOT THE ANSWER. So cancel c from choosing, srry i couldnt be as of much help:(
Slavery in the United States
Answer: B- Excellent military leaders
The Siege of Vicksburg was important to the Union troops because they were able to take control of the Mississippi River. This allowed the Union troops to cut the Confederacy in half and allowed the Union to cut of supplies/resources to Confederate states.
The Battle of Gettysburg was an important Union win because this was the last time in the Civil War that the Confederate troops truly invaded the North. After this battle they did not invade any state north of Pennsylvania.
It gave them more jobs because all the men were drafted to fight in the war.