1.7 Federal and Unitary Systems

TLDR

Federal systems split power between national and regional or local governments, while unitary systems keep power concentrated at the national level. In AP Comparative Government, Mexico, Nigeria, and Russia are the federal course countries, and China, Iran, and the United Kingdom are unitary. The key skill is explaining why a country picks one structure and how centralization can shift over time.

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Federal vs Unitary State

In AP Comparative Government, a federal state divides power between national and regional governments, while a unitary state concentrates constitutional authority at the national level. The course examples are Mexico, Nigeria, and Russia as federal systems, and China, Iran, and the United Kingdom as unitary systems.

For Topic 1.7, the exam skill is comparison. Do not stop at labeling the system. Explain how the structure affects policymaking, regional autonomy, centralization, devolution, and the balance between local diversity and national control.

Why This Matters for the AP Comparative Government Exam

This topic gives you the vocabulary and country examples you need to compare how power is organized across the six course countries. Federal versus unitary shows up when you describe a country's system, explain why it was adopted, and analyze how power becomes more centralized or decentralized in response to ethnic divisions, supranational organizations, or other countries.

Because the exam rewards specific country evidence, knowing which countries are federal and which are unitary helps you on comparative questions, concept application, and argument writing. You can use these examples to explain causes and effects, point out similarities and differences, and back up claims about how governments balance local autonomy against national control.

Key Takeaways

• Federal systems (Mexico, Nigeria, Russia) divide power between national and regional governments, giving regions some autonomy over services like education while the national government keeps reserved powers.
• Unitary systems (China, Iran, United Kingdom) concentrate power at the national level, which can mean more uniform policies and more efficient policymaking.
• Centralization is not fixed. Both federal and unitary states can become more centralized or decentralized over time.
• These shifts often respond to internal and external pressures, including ethnic cleavages, supranational organizations, and other countries.
• A unitary system is not automatically more authoritarian than a federal one. The UK is unitary but uses devolution, while federal Russia has centralized heavily.
• For each country, be ready to name the structure and explain the purpose behind it.

Federal Systems

A federal system divides power between a national government and regional or local governments. Among the course countries, Mexico, Nigeria, and Russia are federal.

Common purposes behind a federal structure:

• Shared governance balances different regional interests and can reduce conflict between regions.
• Flexibility lets different regions take different approaches to policy that fit local needs.
• Innovation is encouraged because regions can experiment and see what works.
• Decentralization keeps decision making closer to local communities.
• Protection of minority rights can give minority groups more influence at the regional or local level.

A useful application from outside the course countries: the United States divides power between national, state, and local governments. Treat this as an illustrative example, not a course country.

Mexico, Nigeria, and Russia

In all three, the national government is the most powerful level, even though regional governments hold some real power and autonomy.

• Mexico: Power is split between a strong central government and 32 state governments, with the constitution guaranteeing certain powers to the states. For example, states can raise some taxes locally, and abortion policy has varied from state to state. The central government controls oil, reflecting Mexico's long reliance on it as a major economic resource. These are application examples of how federalism creates policy differences across regions.
• Nigeria: Power is divided between a strong central government and 36 state governments, guaranteed by the constitution. Legal systems show this clearly: several northern states apply Sharia law in civil and criminal matters, while southern states do not. This illustrates real policymaking room for states. Nigeria's strong center reflects a history of military rule and centralized authority.
• Russia: Russia's federalism is more complicated. The constitution guarantees a division of power between the central government and the regions, and regions were tied to the Russian Federation by treaty arrangements that did not apply uniformly to every region. In the 1990s under Yeltsin, the center weakened and many regions governed themselves with significant independence. Under Putin, the central government took steps to reduce regional autonomy:
  • Central enforcement: The military was used in Chechnya, a region whose status was not settled by the standard treaty arrangements, to enforce its place in the Federation.
  • Law: Laws were passed to remove regional governors who did not follow the Russian Constitution when making local law.
  • Federal districts: In 2000, federal districts were created and headed by a presidential envoy, strengthening central oversight of the regions.

Russia shows how a federal structure on paper can still operate with strong central control. Mexico and Nigeria, moving away from authoritarian pasts, generally allow more independent state governments.

Unitary Systems

A unitary system concentrates power at the national level, where the central government is supreme. Among the course countries, China, Iran, and the United Kingdom are unitary.

Common purposes behind a unitary structure:

• Efficiency: Fewer layers of government can speed up decisions and policy adoption.
• Simplicity: A single set of processes can be easier for citizens to understand and engage with.
• Unity: Citizens follow the same laws and policies, which can build a shared national identity.
• Emergency response: With fewer levels to coordinate, a unitary government can respond quickly in a crisis.
• Uniformity: One set of economic or defense policies across the country can make national coordination easier.

A common mistake is to assume unitary always means more authoritarian. It does not. The UK is unitary but uses devolution to grant regional power, while federal Russia is comparatively more centralized.

China, Iran, and the United Kingdom

• China: Power rests with the central government, and specifically with the Communist Party. China's huge size makes it hard for the center to oversee every region, so local authorities pick up some practical autonomy. The shift from a command economy toward a market economy also loosened some central control over policy. Local autonomy here is less about making new laws and more about ignoring or bending central policy, setting local tax rates, or approving projects without central sign-off.
• Iran: Power is concentrated in the central government, and especially in the Supreme Leader, within a theocratic structure.
• United Kingdom: There is no single written constitution, so no level of government other than the central government has guaranteed power. Through devolution, the national parliament has granted regional governments authority over some policy areas, such as education. Because that power comes from national legislation rather than a constitution, the center can adjust it.

How to Use This on the AP Comparative Government Exam

Concept Application

When a prompt asks about federal or unitary systems, name the structure and then explain the purpose. Do not stop at a definition. Say why a country chose that structure and what it gains, such as local autonomy in a federal state or efficiency and uniformity in a unitary state.

Country Comparison

Comparative questions reward precise pairings. Keep the course country labels straight: Mexico, Nigeria, and Russia are federal; China, Iran, and the United Kingdom are unitary. A strong comparison explains a similarity or difference and ties it to a cause, like how Russia centralized power while the UK devolved it.

Argumentation

For argument questions, use these countries as evidence and address the other side. For example, you can argue that a structure on paper does not guarantee how power actually works, using federal Russia's centralization or the UK's devolution within a unitary system. Explain the how and why, not just the label.

Common Trap

Watch for prompts that assume structure is permanent. Centralization and decentralization can change over time in both federal and unitary states, often in response to ethnic divisions, supranational organizations, or pressure from other countries. Show that shift to earn the explanation points.

Common Misconceptions

• Unitary equals authoritarian. Not true. The UK is unitary and uses devolution, while federal Russia has centralized heavily. Structure and regime type are separate ideas.
• Federal regions are fully independent. In Mexico, Nigeria, and Russia, the national government remains the most powerful level and keeps reserved powers. Regions have autonomy, not full independence.
• Devolution makes the UK federal. Devolved power comes from national legislation, not a constitution that guarantees it, so the UK stays unitary and the center can change those powers.
• Once federal or unitary, always the same. Both types can shift toward more or less centralization over time, as Russia's recentralization shows.
• Russia's treaty arrangements covered every region the same way. They did not apply uniformly, which is part of why places like Chechnya were treated differently.

Related AP Comparative Government Guides

• Unit 1 Overview: Political Systems, Regimes, and Governments
• 1.1 The Practice of Political Scientists
• 1.3 Democracy vs. Authoritarianism
• 1.2 Defining Political Institutions
• 1.4 Democratization
• 1.5 Sources of and Changes in Power and Authority