Do you have a list of options for this question? :)
Well economically, South Carolina had a cash crop of rice. Rice could grow easily because of the swampy environment South Carolina could offer. The Carolinas both also had a cash crop of tobacco and indigo.
Reading this, he is trying to say that the French and the Spanish are powerful allies for the US and they need to make a peace treaty, the Peace of Paris, to stop the bloodshed between the two.
Japanese citizens I guess I hope I helped