Post office is a delegated power meaning given specifically to the federal govt. Maybe none of the above?
Answer: b. raise prices in the face of competition from another company
Explanation:
He printed an abolitionist newspaper called The Liberator.
He helped found the American Anti-Slavery Society.
There was the Yankee–Pennamite Wars that happened in this time period. But because the question is broad, technically asking for any event between the dates of January 9th 1788 through May 29th 1790, so I don't think anyone can say for sure.