A unitary system is a form of government where one central authority holds all governing power, with regional or local governments exercising only what the center delegates. In AP Gov (Topic 1.9), it's the main contrast to federalism, where power is constitutionally shared between national and state governments.
A unitary system puts all governing power in one place. The national government makes the rules, and any power a local or regional government has exists only because the center handed it down (and can take it back). The United Kingdom and France are classic examples. Local councils exist, but Parliament in London is the ultimate authority.
For AP Gov, the unitary system matters as a comparison point. The U.S. is a federal system, where the Constitution itself divides power between the national government and the states, and neither level can simply abolish the other. A unitary system removes that whole dynamic. There are no reserved state powers, no concurrent powers, and no tug-of-war over who gets to regulate what. Policies tend to be uniform nationwide because one government writes them. Think of it as the zero-federalism baseline. Once you understand what a unitary system lacks, everything about American federalism in Unit 1 stands out more clearly.
This term lives in Unit 1: Foundations of American Democracy, specifically Topic 1.9 (Federalism in Action), and supports learning objective AP Gov 1.9.A, which asks you to explain how the distribution of powers between national and state governments impacts policymaking. The unitary system is your contrast tool for that explanation. The CED's essential knowledge says federalism creates multiple access points for stakeholders to influence policy and that national policymaking is constrained by powers shared with the states. A unitary system has neither feature. One government means one access point and no state-level constraint on national policy. When an exam question asks why U.S. policy on something like marijuana or education varies state to state, the underlying answer is "because we are federal, not unitary." Being able to articulate that contrast is exactly what 1.9.A is testing.
Keep studying AP Gov Unit 1
Federal System (Unit 1)
This is the direct opposite and the whole reason the term exists in the course. In a federal system, the Constitution divides power between national and state governments so neither can erase the other. In a unitary system, the states (or provinces) only have whatever power the center lets them borrow.
Centralization and Decentralization (Unit 1)
A unitary system is centralization taken to its endpoint. American federalism slides along a spectrum between centralized and decentralized power, and debates over that slider (think New Deal expansion vs. devolution in the 1990s) are debates about how close to unitary the U.S. should get without ever actually becoming unitary.
Categorical Grants and Block Grants (Unit 1)
Grants show how a federal system can act a little unitary without changing the Constitution. Categorical grants with strings attached let the national government steer state policy, pulling power toward the center, while block grants push discretion back to the states. The grant system is the everyday tug-of-war that a unitary system simply doesn't have.
Commerce Clause (Units 1 & 3)
Broad readings of the commerce clause expand national power and nudge the U.S. in a more centralized, unitary-ish direction, while cases that limit it (like United States v. Lopez) push back toward state authority. The commerce clause is where the unitary-vs-federal tension plays out in actual constitutional law.
You won't be asked to write an essay about unitary systems themselves, since the course is about American government. Instead, the term shows up in multiple-choice questions as a comparison or definition check, like a stem describing a country where "all authority rests with the central government" and asking you to identify the system, or a question asking which feature distinguishes a federal system from a unitary one (answer: constitutionally protected state power). No released FRQ has used the term verbatim, but it's quietly useful in the Argument Essay and Concept Application questions. When you explain why federalism creates multiple access points for policy influence or why national policymaking is constrained by the states, you're implicitly contrasting the U.S. with a unitary model, and naming that contrast makes your reasoning sharper.
The difference is where power originates and who can take it away. In a federal system like the U.S., the Constitution itself grants states their own powers (reserved powers under the 10th Amendment), so the national government can't abolish state authority. In a unitary system, all power belongs to the central government, and local governments are basically administrative branches that exist at the center's pleasure. Quick test: if the national legislature could legally dissolve the regional governments tomorrow, it's unitary. Also don't confuse unitary with confederal, which is the opposite extreme where the states hold the real power, like the U.S. under the Articles of Confederation.
A unitary system concentrates all governing power in a single central government, and any local authority exists only because the center delegated it.
The United States is federal, not unitary, because the Constitution divides power between national and state governments and protects state authority through the 10th Amendment.
Unitary systems produce uniform national policies, while federal systems like the U.S. allow policy to vary state by state on issues like education and marijuana laws.
Per LO 1.9.A, federalism creates multiple access points for influencing policy and constrains national policymaking through shared concurrent powers, two features a unitary system lacks.
The spectrum runs confederal (states hold power, like the Articles of Confederation) to federal (shared power, like the U.S.) to unitary (center holds power, like the U.K. or France).
Tools like categorical grants pull the U.S. toward centralization without ever making it unitary, because states still hold constitutional power of their own.
A unitary system is a form of government where one central authority holds all power, and regional or local governments only exercise what the center delegates. It appears in Topic 1.9 as the main contrast to the American federal system.
No. The U.S. is a federal system because the Constitution divides power between the national government and the states, and the 10th Amendment reserves powers to the states. A unitary government could legally abolish its regional governments, which Congress cannot do to the states.
In a unitary system, local governments get their power from the central government and can lose it at any time. In a federal system, the constitution itself gives both levels their own power, so states have authority the national government can't take away.
No, they're opposites. A unitary system puts nearly all power in the central government, while a confederation (like the U.S. under the Articles of Confederation, 1781-1789) puts the real power in the states and leaves the center weak. Federalism sits between the two.
The United Kingdom and France are the classic examples. Local governments exist in both, but the national legislature is the ultimate source of authority and can restructure or override them.