all of the above
Vicksburg was the key to the Anaconda Plan's goal of gaining control of the Mississippi River and cutting the South in half.
So true, although the Winfield Scott plan was laughed at when he suggested it, it had to be clear that controlling the Mississippi River was vital to the North's war efforts.
During the Civil War, the loss of life was a major issue as was the cost of the war. Another controversy involved the forced conscription of soldiers.
There was a divided field of four candidates.
Iron clad ships were introduced into battle
New technology applied in the war.
Food shortages
An effect of the Civil War was that slavery had effectively ended.
Sherman
8 billion
After a lengthy siege