---
title: "Religion — AP Comp Gov Definition & Exam Guide"
description: "Religion in AP Comp Gov is a source of power, authority, and legitimacy that shapes political culture, from Iran's theocracy to Nigeria's religious cleavages."
canonical: "https://fiveable.me/ap-comp-gov/key-terms/religion"
type: "key-term"
subject: "AP Comparative Government"
unit: "Unit 1"
---

# Religion — AP Comp Gov Definition & Exam Guide

## Definition

In AP Comparative Government, religion is a source of power, authority, and legitimacy and a shaper of political culture; it can legitimize a regime (Iran's theocracy after 1979), divide a society along cleavage lines (Nigeria), or be managed and restricted by the state (China).

## What It Is

Religion in [AP Comp Gov](/ap-comp-gov "fv-autolink") isn't about theology. It's about how faith functions politically across the six course countries. The CED treats religion in two main ways. First, it's a **source of power, authority, and legitimacy** (Topics 1.5 and 1.8). When citizens believe a government rules with religious backing, that belief confers legitimacy. The clearest example is Iran, where the [1979 Revolution](/ap-comp-gov/key-terms/1979-revolution "fv-autolink") replaced a dictatorship with a theocracy based on Islamic Sharia law, and clerics like the Supreme Leader hold real political power because of their religious authority.

Second, religion shapes **[political culture](/ap-comp-gov/unit-3/political-culture/study-guide/EBRuRGygqOS3skxhsNjf "fv-autolink")** (Topic 3.2). The CED lists religious traditions, alongside geography and history, as a factor that forms a population's beliefs about the role of government and the rights of individuals. Religion also works as an agent of political socialization, transmitting values across generations. The same concept plays out very differently across countries. Nigeria's split between a largely Muslim north and Christian south creates a deep social cleavage. The UK has an established church but a largely secular politics. China's officially atheist party-state tightly regulates religious organizations precisely because they're a rival source of authority.

## Why It Matters

Religion lives in [Unit 1](/ap-comp-gov/unit-1 "fv-autolink") (Political Systems, [Regimes](/ap-comp-gov/key-terms/regime "fv-autolink"), and Governments) and Unit 3 (Political Culture and Participation). It directly supports three learning objectives: AP Comp Gov 1.5.A, which names religion as a source of power and authority alongside constitutions, militaries, and parties; AP Comp Gov 1.8.A, which lists religious heritage and organizations as a source of legitimacy for both democratic and authoritarian regimes; and AP Comp Gov 3.2.A, where religious traditions help form political culture (IEF-1.C.2). Religion is one of the best concepts in the course for comparison questions because every course country handles it differently. If you can explain why religion legitimizes Iran's regime but threatens China's, you understand what the exam means by 'sources of legitimacy.'

## Connections

### [Theocracy (Unit 1)](/ap-comp-gov/key-terms/theocracy)

A [theocracy](/ap-comp-gov/key-terms/theocracy "fv-autolink") is what you get when religion isn't just one source of legitimacy but the foundation of the whole regime. Iran after 1979 is the course's example, with Sharia law as the basis of state authority and unelected clerics holding top positions.

### Political Culture and Socialization (Unit 3)

Religion is one of the big agents of [political socialization](/ap-comp-gov/key-terms/political-socialization "fv-autolink"), teaching people values about authority, order, and individual rights before they ever vote. That's why authoritarian regimes like China heavily regulate religious institutions; they don't want a competing teacher.

### Social Cleavages (Unit 3)

Religion is a classic [cleavage](/ap-comp-gov/key-terms/cleavage "fv-autolink") line, and Nigeria is the go-to example. The Muslim north and Christian south disagree over things like Sharia law in northern states, which shapes federalism, party politics, and conflict. The 2018 SAQ on cleavages is exactly this territory.

### Secularism (Units 1 and 3)

Secularism is the deliberate separation of religion from state power. Mexico's constitution and China's official atheism show that a state can limit religion's political role even when the population is religious, which is a great contrast point against Iran.

## On the AP Exam

Religion shows up most often in legitimacy and political culture questions. MCQs ask things like which source of legitimacy a regime relies on (religious heritage is a listed option for both democratic and authoritarian regimes), how Nigeria's religious diversity shapes its political culture, or which agents of socialization authoritarian regimes control. On SAQs, religion appears inside cleavage questions, like the 2018 SAQ on social and economic cleavages dividing society, and civil liberties comparisons, like the 2021 SAQ comparing protection of civil liberties in two course countries (religious freedom in China vs. the UK is a common pairing). Your job is never to describe a religion itself. It's to explain what religion DOES politically: confers legitimacy, divides society, mobilizes voters, or gets restricted by the state. Always attach a specific course country.

## Religion vs Theocracy

Religion is a source of power and legitimacy that exists in every course country to some degree. Theocracy is a specific regime type where religious law and religious leaders actually run the government. Only Iran is a theocracy. The UK has an official state church and Nigeria has northern states using Sharia law, but neither is a theocracy because clerics don't control the national government. Don't call a country a theocracy just because religion influences its politics.

## Key Takeaways

- The CED lists religion as a source of power and authority (1.5.A) and religious heritage and organizations as a source of legitimacy (1.8.A) for both democratic and authoritarian regimes.
- Iran is the course's theocracy: the 1979 Revolution replaced dictatorial rule with a regime based on Islamic Sharia law, where religious authority directly confers political power.
- Religious traditions are one of the factors (with geography and history) that shape political culture, forming citizens' beliefs about the role of government and individual rights (IEF-1.C.2).
- Religion can divide as well as legitimize: Nigeria's Muslim-Christian cleavage shapes its federalism, party competition, and conflicts over Sharia law.
- Authoritarian regimes often restrict religion because it's a rival source of authority; China's officially atheist party-state tightly controls religious organizations.
- On the exam, always explain religion's political function (legitimacy, cleavage, socialization, or state control) and anchor it to a specific course country.

## FAQs

### What is religion as a source of legitimacy in AP Comp Gov?

Religion confers legitimacy when citizens believe a government has the right to rule because it aligns with their faith. The CED lists religious heritage and organizations as a legitimacy source alongside elections, nationalism, tradition, and economic growth (1.8.A).

### Is Iran the only theocracy in AP Comp Gov?

Yes. Among the six course countries, only Iran is a theocracy, established after the 1979 Revolution and based on Islamic Sharia law. Nigeria has northern states that use Sharia and the UK has an established church, but religious leaders don't run those national governments.

### How is religion different from political culture?

Political culture is the whole set of collective attitudes, values, and norms in a political system (IEF-1.C.1). Religion is one input that shapes it, along with geography and history. Religion influences political culture; it isn't the same thing.

### Does religion only help authoritarian regimes?

No. The CED says religious heritage can be a legitimacy source for both democratic and authoritarian regimes. It can also threaten regimes, which is why China restricts religious organizations, and it can divide democracies, as Nigeria's Muslim-Christian cleavage shows.

### How does religion show up on the AP Comp Gov exam?

Mostly through legitimacy questions, cleavage questions (like the 2018 SAQ on social cleavages dividing society), and civil liberties comparisons (like the 2021 SAQ comparing two course countries). You're expected to explain religion's political effect with a country-specific example.

## Related Study Guides

- [1.8 Political Legitimacy](/ap-comp-gov/unit-1/political-legitimacy/study-guide/2mLcWOkHFriuqlwRFqqy)
- [3.2 Political Culture](/ap-comp-gov/unit-3/political-culture/study-guide/EBRuRGygqOS3skxhsNjf)
- [1.5 Sources of and Changes in Power and Authority](/ap-comp-gov/unit-1/sources-power-authority/study-guide/HAHdQvILHepxouwGUSXm)

## Structured Data

```json
{"@context":"https://schema.org","@graph":[{"@type":"LearningResource","@id":"https://fiveable.me/ap-comp-gov/key-terms/religion#resource","name":"Religion — AP Comp Gov Definition & Exam Guide","url":"https://fiveable.me/ap-comp-gov/key-terms/religion","learningResourceType":"Concept explainer","educationalLevel":"AP / High School","about":{"@id":"https://fiveable.me/ap-comp-gov/key-terms/religion#term"},"audience":{"@type":"EducationalAudience","educationalRole":"student"},"dateModified":"2026-06-11T00:49:03.706Z","isPartOf":{"@type":"Collection","name":"AP Comparative Government Key Terms","url":"https://fiveable.me/ap-comp-gov/key-terms"},"publisher":{"@type":"Organization","name":"Fiveable","url":"https://fiveable.me"}},{"@type":"DefinedTerm","@id":"https://fiveable.me/ap-comp-gov/key-terms/religion#term","name":"Religion","description":"In AP Comparative Government, religion is a source of power, authority, and legitimacy and a shaper of political culture; it can legitimize a regime (Iran's theocracy after 1979), divide a society along cleavage lines (Nigeria), or be managed and restricted by the state (China).","url":"https://fiveable.me/ap-comp-gov/key-terms/religion","inDefinedTermSet":{"@type":"DefinedTermSet","name":"AP Comparative Government Key Terms","url":"https://fiveable.me/ap-comp-gov/key-terms"},"educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalSubject","educationalFramework":"AP Course and Exam Description","targetName":"AP Comparative Government Unit 3, Topic 3.2, LO 3.2.A"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","educationalFramework":"AP Course and Exam Description","targetName":"AP Comparative Government Unit 1, Topic 1.8, LO 1.8.A"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","educationalFramework":"AP Course and Exam Description","targetName":"AP Comparative Government Unit 1, Topic 1.5, LO 1.5.A"}]},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"What is religion as a source of legitimacy in AP Comp Gov?","acceptedAnswer":{"@type":"Answer","text":"Religion confers legitimacy when citizens believe a government has the right to rule because it aligns with their faith. The CED lists religious heritage and organizations as a legitimacy source alongside elections, nationalism, tradition, and economic growth (1.8.A)."}},{"@type":"Question","name":"Is Iran the only theocracy in AP Comp Gov?","acceptedAnswer":{"@type":"Answer","text":"Yes. Among the six course countries, only Iran is a theocracy, established after the 1979 Revolution and based on Islamic Sharia law. Nigeria has northern states that use Sharia and the UK has an established church, but religious leaders don't run those national governments."}},{"@type":"Question","name":"How is religion different from political culture?","acceptedAnswer":{"@type":"Answer","text":"Political culture is the whole set of collective attitudes, values, and norms in a political system (IEF-1.C.1). Religion is one input that shapes it, along with geography and history. Religion influences political culture; it isn't the same thing."}},{"@type":"Question","name":"Does religion only help authoritarian regimes?","acceptedAnswer":{"@type":"Answer","text":"No. The CED says religious heritage can be a legitimacy source for both democratic and authoritarian regimes. It can also threaten regimes, which is why China restricts religious organizations, and it can divide democracies, as Nigeria's Muslim-Christian cleavage shows."}},{"@type":"Question","name":"How does religion show up on the AP Comp Gov exam?","acceptedAnswer":{"@type":"Answer","text":"Mostly through legitimacy questions, cleavage questions (like the 2018 SAQ on social cleavages dividing society), and civil liberties comparisons (like the 2021 SAQ comparing two course countries). You're expected to explain religion's political effect with a country-specific example."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"AP Comparative Government","item":"https://fiveable.me/ap-comp-gov"},{"@type":"ListItem","position":2,"name":"Key Terms","item":"https://fiveable.me/ap-comp-gov/key-terms"},{"@type":"ListItem","position":3,"name":"Unit 1","item":"https://fiveable.me/ap-comp-gov/unit-1"},{"@type":"ListItem","position":4,"name":"Religion"}]}]}
```