Answer:
The Middle Colonies were the big food producing region that included corn and wheat.
Depending on what you mean, it changed when the north saw that slavery was not just, and started goin on the attack on it. Which lead to the whole civil war of confederates vs the union
Haiti: after the French Revolution, the line in Hate between the rich and the poor grew bigger. The slaves, rebelled and to end this, the French gave slaves rights and abolished slavery. Toussaint L'Ouverture helped to rid Haiti of both British and Spanish influence.
Dominican Republic: In 1801, L'Ouverture invaded the colony and tried to get rid of slavery. Fighting between Britain, France, and Spain, caused problems in the country, but Spain finally gained full control, but they didn't really show interest.
I'm sorry i can't help u I don't remember this topic