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Reading Time: 8 min
Last Updated: August 18, 2026
Main Ideas: 5
Reading Time: 8 min
Last Updated: August 18, 2026
Main Ideas: 5

Topic 1.7 Notes – Federal and Unitary Systems

Verified for 2027 AP® Comparative Government & Politics Exam
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This topic is about where power sits inside a state. Federal and unitary systems both organize national and regional governments, but they do it in different legal ways, and the AP exam loves asking you to separate the formal structure from what happens in practice.

What Federal and Unitary Systems Are

This is about the territorial distribution of power, not whether a country is democratic or authoritarian.

  • In a federal system, the constitution divides power between the national government and regional governments. Regional governments have authority the center cannot just erase.
  • In a unitary system, ultimate constitutional authority stays with the national government. Regions can have power, but the center gave it and can change it.

Course-country split

FederalUnitary
MexicoChina
NigeriaIran
RussiaUnited Kingdom

The exam often pushes one key distinction. Formal structure and actual practice are not the same thing.

  • Russia is federal on paper, but heavily centralized in reality.
  • United Kingdom is unitary on paper, but devolved in practice.
  • China is unitary, but local governments sometimes get room to experiment.

Regional autonomy is still not sovereignty. States or provinces usually cannot leave on their own, and the national government usually keeps defense, foreign affairs, and currency.

Federal vs Unitary Features and Why States Choose Them

Federal systems usually have two constitutionally recognized levels of government.

  • National government usually handles defense, foreign affairs, currency, and national economic policy.
  • Regional governments often handle education, health care, policing, transportation, and social services.

Unitary systems keep final authority at the center.

  • Provinces or regions may administer policy.
  • The center can change their boundaries, powers, or institutions.

States choose federalism to:

  • accommodate ethnic, linguistic, religious, or regional diversity
  • reduce conflict by sharing power
  • bring policy closer to local communities
  • allow policy variation
  • govern large or diverse territory
  • spread offices and resources across regions

States choose unitarism to:

  • create uniform laws and policies
  • coordinate policy faster
  • simplify administration
  • strengthen national unity
  • keep tighter control over security and economic planning

The tradeoff is straightforward. Federalism gives flexibility and representation, but can strengthen regional identity and create uneven services. Unitarism gives coordination and uniformity, but may be less responsive locally.

Centralization, Decentralization, and Devolution

These terms explain what power looks like in practice.

  • Centralization means effective power is concentrated nationally.
  • Decentralization means responsibilities move away from the center.
  • Devolution means real decision-making power goes to regional institutions.

In a unitary state, devolved power still depends on the national government. In a federal state, regional power rests on the constitution.

A weaker version is administrative delegation. Local officials carry out national policy, but they do not make independent policy.

A great AP test for any country has two parts:

  1. What is the legal source of regional authority?
  2. How much power do regions actually exercise?

Shifts happen because of:

  • ethnic and regional cleavages
  • separatist movements
  • security threats
  • democratization
  • economic reform
  • supranational organizations and other countries

The Federal Course Countries

Mexico

The 1917 Constitution created a federal system with 31 states plus Mexico City. States have their own constitutions, governors, legislatures, and courts. In practice, PRI dominance from 1929 to 2000 made the system more centralized. Democratization gave governors more independence, but states still depend heavily on federal transfers, so fiscal power stays centralized.

Nigeria

The 1999 Constitution created a federation of 36 states plus the Federal Capital Territory. Federalism helps manage major cleavages, especially Hausa-Fulani, Yoruba, and Igbo, plus the Muslim north and Christian south. State creation expanded from 3 regions to 36 states to weaken old regional blocs. After 1999, 12 northern states expanded Sharia criminal law, showing real regional autonomy. Oil revenue still keeps the center powerful.

Russia

The 1993 Constitution defines Russia as federal. In the 1990s under Boris Yeltsin, regions had more autonomy and some got special bilateral agreements. Chechnya and the First Chechen War (1994-1996) plus Second Chechen War (beginning 1999) showed there was no accepted right to secede. Under Vladimir Putin, Russia recentralized through seven federal districts in 2000 (a North Caucasus district was split off in 2010, so current maps show eight), the end of direct gubernatorial elections after the 2004 Beslan school siege, and tightly controlled restored elections in 2012.

Study guide illustration

Russia’s federal districts

The Unitary Course Countries

China

China is a unitary state under CCP control. Provinces administer policy but do not have constitutionally protected sovereignty. The five autonomous regions are Guangxi, Inner Mongolia, Ningxia, Tibet, and Xinjiang. Deng Xiaoping-era reforms allowed local economic experimentation, but the 1994 tax-sharing reform pulled revenue power back to the center. Hong Kong and Macao are special administrative regions, but China is still unitary.

Iran

Iran is a unitary Islamic republic. Provinces are administrative units inside a centralized system tied to the Supreme Leader and national religious-political institutions. Local councils exist, but there is no federal-style regional sovereignty. Centralization helps the regime maintain unity across Azeri, Kurd, Arab, and Baluchi populations.

United Kingdom

The UK is a unitary state based on parliamentary sovereignty, but it has devolution, not federalism. Key laws and agreements were all in 1998: the Scotland Act, Government of Wales Act, and the Good Friday Agreement, which helped create the Northern Ireland Assembly. Devolved governments handle education, health, and transportation, while Westminster keeps defense and foreign affairs. Devolution is asymmetrical, and England has no separate parliament. Brexit and EU exit in 2020 shifted authority again and showed how supranational organizations affect power distribution.

Key Takeaways

Federal versus unitary tells you where authority is legally located, not whether a regime is democratic.
Russia is the clearest AP example of formal federalism with practical centralization.
The UK is the clearest AP example of unitary government with major devolution.
In a federal system, regional power is constitutionally protected; in a unitary system, regional power exists because the center allows it.
Regional autonomy never means a normal right to conduct foreign policy, print currency, or secede unilaterally.
Nigeria’s federalism is tied directly to managing ethnic and religious cleavages.
Mexico shows that federalism can stay in place legally while party dominance or fiscal dependence centralizes power in practice.
China can decentralize implementation or experimentation without becoming federal.

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Notes

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