Answer:
Federalism is the system where the National and State governments share power.
Since states evolved from several colonies with diverse population and needs, the framers adopted "The Northwest Ordinance" in the times of the "Articles of Confederation" around 1787, to set the approach for the admission of new states into the confederation and protect civil liberties based on the general vision of the country as one, and to establish equitable policies for the settlement and political inclusion of the American territories in order to foster the American frontier and accelerate the westward expansion.
Step-by-step explanation: