Answer:
The Union responded to the repetitive defeats by growing grim. The Emancipation Proclamation had a strong impact that declared slavery to be wrong and made it clear that a Union victory would end slavery in the United States.
It balanced the states with slave and non slave states by adding Missouri as a slave state and Maine as a free state.
Revolution unleashes strong political, social and economic forces that increased participation in politics and governance and growth and diffusion of the specific population. Revolution also has tremendous effects on many other countries. For example The American Revolution had a huge effect on europe. It served an inspiration for France and demonstrated liberal political ideas of the Enlightenment were more than utterance.
