Slavery began when the other colonies noticed that South Carolina citizens we're using them. Some of the other colonies had to do the labor themselves, and them not wanting to, bought slaves (Weather from the Europe or Africa) and used them for their own goods. A alternative could be the people doing the work themselves.
Answer:
1. Since the British were lacking money and and army, (due to their defeat in Yorktown) Benjamin Franklin was able to convince the British to make peace with the U.S., and made them sign the Treaty of Paris which gave the colonists independence.
2. The colonies would establish a democratic government and assign a president to lead the country.
I just learned about this!! The civil war right?! Positive changes for them through the reconstruction years are that African Americans could become sharecroppers and Florida had to rewrite the constitution allowing African Americans the right to vote in order to rejoin the United States Of America. I'm not positive about this answer though! Good luck! I'm glad I could help!