Federalism is one of the central principles of American Constitutionalism because helps in the dividing and sharing of power between state and national governments, thus, making organization of the government manageable and standardized.
The other major principles of American Constitutionalism are:
Popular Sovereignty; Checks and Balances; Limited Power of the Government; Separation of Branches.
The French had excepted to control the negotiation. France lost all of its territory in North America to the Spanish and English/Americans. France only kept a few islands in the Caribbean. Everything West of the Mississippi River and all of Canada was given to the English/Americans. Spain got New Orleans and everything east of the Mississippi River. The English got Florida from Spain when they traded New Orleans and Florida in the Treaty
