Which term refers to a theory of federalism saying that both the national and state governments have final authority over their own policy domains?

• A. Dual sovereignty
• B. Federal
• C. Clause
• D. Common Market

Answer: (A)

Dual sovereignty captures the idea that national and state governments each have final authority in their own policy domains. In this view, the national government holds final say over issues that are national in scope—defense, monetary policy, foreign affairs—while states hold final say over matters that are local or intrastate, such as policing, education, and local regulations. This separation creates two sovereign layers operating in distinct spheres, a classic layer-cake view of federalism. The concept helps explain why states can experiment with different policies while the nation maintains a unifying framework for nationwide concerns. It’s different from simply labeling the system “federal,” which is broader and doesn’t inherently emphasize two distinct final authorities, and it isn’t about a clause or European economic arrangements like a common market.