Answer:
This will be my last answer for now, but I'm positive the Louisiana Purchase occured between France and the US during Jefferson's Presidency. It was a really good deal for the US, because it was a lot of land for little money. However, envoys under Jefferson negotiated the deal without his direct approval, meaning Jefferson was forced to push for ratification.
It was the French civil code for governing property.
Counties support the state government by using a Bicameral system creating to side branches such as the federal of state have, but this branch passes on laws that can be signed by other States giving them that thier state/counties are eligable to do what ever act the government has givien them, such as Formal President Barack Obama gave and signed the ObamaCare Act, and many States/Counties signed for as well.