The two territories which were a part of the French Empire after the signing of the Treaty of Paris in 1763 were islands in the Caribbean and Louisiana Territory.
The Treaty of Paris was signed by Britain, France and Spain to commemorate the victory of Britain and Prussia over France and Spain, after 7 years of war.
I think the location of the mountain ranges in the U.S. has effected the settlement and development because of the weather. The weather affects the farming.