Henry refused to support the Constitution because it was lacking a bill of rights. He called it, "the most fatal plan that could possibly be conceived to enslave a free people." In other words he thought that without a bill of rights, we (the people) would be enslaving ourselves.
The treaty allowed for the US to give Spain 5 million dollars in exchange for the US to gain ownership of Florida and the western territory of California let me know if you need anything else :)
