1The Constitution was built upon many different principles that layered together to build astrong government which has lasted over 200 years. The founding fathers intended to design aform of government that was fair to both the states and nation, as well as preserved the rights ofthe citizens. The main principles of the Constitution are federalism, separation of powers, andthe rule of law. FederalismFederalism can be defined as a system of government in which political authority is divided between a general or national government and regional (or “state”) government.1The United States is the first example of federalism, by the definition we know it today.2The purpose of federalism was to preserve the rights of citizens within their own states while still giving the national government powers over national or diplomatic matters. Federalism in the United States has evolved quite a bit since it was first implemented in 1787. Two major kinds of federalism have dominated political theory. There is dual federalism, in which the federal and thestate governments are co-equals. Under the second theory of federalism known as cooperative federalism, the national, state, and local governments interact cooperatively and collectively to solve common problems.3Federalism lies at the heart of the United States Constitution.