Ulysses S. Grant was the final commander of the Union Army
Answer:
It required fewer people to produce goods
It frees black slaves in the South. "All persons held as slaves within the rebrllious states are and hencefowars shall be free." It dosent however free existing slaves in the north, that happens 2 years later. In December 1865 the thirteenth amendment was ratified finally ending slavery in the United States.
