What was the major reason the framers of the Constitution provided for shared power between the national and state governments? This allowed the states could first test out ideas about governance before they were adopted nationally.
This assured one state would not be able to threaten another state with the use of force.
This prevented the new republic from falling into the tyrannical rule by a king or one individual.
This assured that no one government would have shoulder the burden and complexity of running a country.