U.S Constitution: The U.S Constitution is the current supreme law of the United States, ratified in 1788. Unlike the Articles of Confederation, it created a stronger central government with separation of powers among three branches.
Federalism: Federalism is a system of government where power is divided between a central authority (federal government) and individual states. It was incorporated into both the Articles of Confederation and the U.S Constitution.
Checks and Balances: Checks and balances refer to mechanisms in place within a government system that ensure one branch does not become more powerful than others. This concept was enhanced in the U.S Constitution compared to its predecessor.