---
title: "Civil War — AP Euro Definition, Examples & Exam Guide"
description: "A civil war is an armed conflict between groups within one country. In AP Euro, the English, Russian, and Spanish Civil Wars connect Units 3, 8, and 9."
canonical: "https://fiveable.me/ap-euro/key-terms/civil-war"
type: "key-term"
subject: "AP European History"
---

# Civil War — AP Euro Definition, Examples & Exam Guide

## Definition

A civil war is an armed conflict between groups within the same country fighting for control of the government or competing visions of how it should be run. In AP Euro, the big three are the English Civil War (1642-1649), the Russian Civil War (1917-1922), and the Spanish Civil War (1936-1939).

## What It Is

A civil war is a war fought inside one country, between [factions](/ap-euro/key-terms/factions "fv-autolink") competing for control of the state or for rival visions of what the state should be. Unlike a foreign war, the enemy is your own countrymen, which is why civil wars tend to reshape political structures so dramatically. Whoever wins gets to redesign the government.

In [AP Euro](/ap-euro "fv-autolink"), "civil war" isn't one event. It's a pattern that shows up in three major moments. The [English Civil War](/ap-euro/unit-3/english-civil-war-glorious-revolution/study-guide/NdZTflJhMwwWqT0CNUic "fv-autolink") (1642-1649) was a fight among the monarchy, Parliament, and other elites over who held what power, and the CED frames it as the prime example of competition between monarchs and rival groups (KC-1.5.III.A). The Russian Civil War followed the Bolshevik takeover in 1917, pitting communist Red forces against anti-communist Whites, and its outcome cemented a Marxist-Leninist state. The Spanish Civil War (1936-1939) became an international ideological battleground between fascism and the left, with Hitler and Mussolini backing Franco while Britain and France stuck to non-intervention. Each one is a moment when internal conflict redirected a nation's entire political trajectory.

## Why It Matters

Civil wars are one of the best threads for tracking the AP Euro theme of states and other institutions of power across the whole course. In [Unit 3](/ap-euro/unit-3 "fv-autolink"), the English Civil War supports LO 3.2.A (explain the causes and consequences of the English Civil War) and shows how England ended up constitutionalist while France went absolutist under LO 3.7.A. In Unit 8, the [Russian Civil War](/ap-euro/key-terms/russian-civil-war "fv-autolink") is essential knowledge for LO 8.3.A (the Bolshevik takeover "prompted a protracted civil war between communist forces and their opponents"), and the Spanish Civil War feeds into LOs 8.6.A and 8.7.A as a dress rehearsal for World War II. KC-4.2 ties it all together at the period level. Economic collapse and total war "engendered internal conflicts" across 20th-century Europe. If a question asks how internal political instability shaped Europe, civil war is usually part of the answer.

## Connections

### Revolution (Units 3, 5, 8)

These two overlap constantly. The [Russian Revolution](/ap-euro/unit-8/russian-revolution-effects/study-guide/NLQ5ffQbY6V7jTD9nB7F "fv-autolink") caused the Russian Civil War, and the English Civil War ended with a revolutionary act, executing the king. The rough distinction is that a revolution overthrows a regime while a civil war is the armed fight between factions, and many events in AP Euro are both at once.

### English Civil War and the Glorious Revolution (Unit 3)

The English Civil War is the AP Euro original. Per KC-2.1.II.A, its outcome (plus the Glorious Revolution) protected gentry and aristocratic rights from absolutism, which is why England became the constitutionalist counterexample to [Louis XIV](/ap-euro/key-terms/louis-xiv "fv-autolink")'s France.

### Fascism and Totalitarianism (Unit 8)

The [Spanish Civil War](/ap-euro/key-terms/spanish-civil-war "fv-autolink") shows how a civil war can go international. Germany and Italy armed Franco while volunteers from across Europe fought for the Republic, turning a Spanish conflict into a fascism-vs-communism proxy fight and a testing ground for WWII tactics.

### Proxy war (Unit 9)

The Spanish Civil War previews the Cold War playbook. When outside superpowers fund and arm opposing sides of someone else's internal conflict, a civil war becomes a proxy war, exactly the pattern that defined US-Soviet competition after 1945.

## On the AP Exam

Civil wars show up at every level of the exam. The 2022 DBQ asked you to evaluate whether the English Civil War (1642-1649) was motivated primarily by religious or primarily by political reasons, which is a classic causation task requiring you to sort evidence into categories and argue for one. The 2017 DBQ on the Glorious Revolution sits in the same Unit 3 territory. Multiple-choice questions love the Spanish Civil War, especially why it's called a "testing ground" for WWII, how British and French non-intervention reflected 1930s appeasement, and how it illustrates the international ideological battle between fascism and communism. The move the exam rewards isn't narrating battles. It's explaining causes (religious vs. political, economic instability, postwar bitterness) and consequences (constitutionalism in England, communist consolidation in Russia, Franco's regime in Spain).

## Civil war vs Revolution

A revolution is the overthrow or fundamental transformation of a regime; a civil war is sustained armed conflict between factions within one country. They often come packaged together but aren't the same thing. The Russian Revolution (1917) toppled the tsar and then the Provisional Government, and the Russian Civil War (1917-1922) was the multi-year fight afterward in which the Bolsheviks defended that takeover against the Whites. Meanwhile the Glorious Revolution of 1688 was a revolution with almost no civil war at all, which is exactly why it's called 'glorious.'

## Key Takeaways

- A civil war is an armed conflict between groups within the same country fighting over control of the government or rival visions of the state.
- The English Civil War (1642-1649) was a power struggle among the monarchy, Parliament, and elites, and its outcome protected England from absolutism and pushed it toward constitutionalism.
- The Russian Civil War followed the 1917 Bolshevik takeover, pitting communist Reds against anti-communist Whites, and the Red victory established the world's first communist state.
- The Spanish Civil War (1936-1939) was an ideological battleground where fascist powers backed Franco while Britain and France stayed out, making it a testing ground for World War II.
- On the exam, civil wars are tested as causation and consequence questions, like the 2022 DBQ asking whether the English Civil War was primarily religious or primarily political.
- Per KC-4.2, economic collapse and total war engendered internal conflicts across 20th-century Europe, so civil war works as a continuity-and-change thread from Unit 3 through Unit 9.

## FAQs

### What is a civil war in AP Euro?

A civil war is an armed conflict between groups within the same country, usually over control of the government. The three you need for AP Euro are the English Civil War (1642-1649), the Russian Civil War (1917-1922), and the Spanish Civil War (1936-1939).

### How is a civil war different from a revolution?

A revolution is the overthrow of a regime; a civil war is the prolonged armed fight between factions inside a country. The Russian Revolution of 1917 toppled the government, and the Russian Civil War of 1917-1922 was the war the Bolsheviks fought afterward to keep power.

### Was the English Civil War about religion or politics?

Both, and that's literally the 2022 DBQ prompt. The CED frames it as a political conflict among the monarchy, Parliament, and elites over their roles in government, but Puritan opposition to the Anglican Church and fears of Catholicism were tangled into it. A strong essay picks one as primary and addresses the other.

### Why is the Spanish Civil War called a testing ground for World War II?

Germany and Italy used Spain (1936-1939) to test weapons, tactics like aerial bombing of cities, and military coordination while backing Franco. Britain and France's non-intervention mirrored the appeasement policy that let fascist states rearm and expand in the 1930s.

### Did the Glorious Revolution involve a civil war?

No, and that's the point of the name. The Glorious Revolution of 1688 replaced James II with William and Mary with almost no bloodshed in England, unlike the English Civil War four decades earlier, which killed a king and tens of thousands of soldiers. Together they secured Parliament's power against absolutism.

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