Answer:He could determine the provenance of the vessels.
Explanation:
All of Korea would have been communist and much of what you see today with North Korea would probably have been the state of all Korea had the North won.
It also would have spread communism to a much farther degree and the U.S. would not have South Korea as an ally.
Idk................................
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.
Too many government regulations but I am not sure on the second answer