<span>I believe the answer is A. He overturned a treaty that was signed unfairly. When he first became president, he signed The Indian Springs Treaty which would cause the natives to move to Mississipi. However, after talking with the tribe, he immediately decided that he had made a mistake and had wanted to reverse the treaties effects. Hope this helped!</span>
The correct answer is A)Eliminated in the North.
One of the biggest reasons why slavery became nonexistent in the North was because it was not a profitable institution. The Northern states have a tough climate, which only allows for a short growing season. Due to the climate, Northerners focused their attention on other means of making money. This includes industry and trading. This is why slavery becomes unpopular in the North after the American Revolution.
The Answer is D: separation of powers among different branches of government