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Reading Time: 8 min
Last Updated: September 11, 2026
Main Ideas: 5
Reading Time: 8 min
Last Updated: September 11, 2026
Main Ideas: 5

Topic 9.9 Notes – Decolonization

Verified for 2027 AP® European History Exam
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Decolonization was the long process by which colonies ended formal European rule and became independent states. The biggest wave came after World War II, when local nationalist movements met a world where European empires were weaker, less respected, and increasingly challenged by global opinion and the Cold War.

What Decolonization Was

Decolonization means ending colonial rule and gaining sovereignty, or the right to govern yourself. It usually took years. A declaration of independence mattered, but so did the fighting, negotiations, and power struggles around it.

A 1945 map of Africa helps show the starting point. Most of the continent was still under European control, with only a few independent states.

Study guide illustration

Colonial rule in Africa, 1945

  • National self-determination meant peoples should choose their own government. Woodrow Wilson made the phrase famous after World War I, but Europeans applied it mostly to Europe, not broadly to Africa and Asia.
  • Indigenous nationalism means anticolonial movements built inside colonized societies. These were local leaders, parties, and activists pushing for self-rule.
  • The metropole was the imperial ruling state, like Britain or France.
  • A settler colony had a strong European settler population. These settlers often fought hardest against majority rule. Algeria is the clearest example.
  • Neocolonialism means formal independence happened, but foreign powers still kept major economic or political influence.

The pattern to remember is simple. Independence came through a mix of negotiation, protest, diplomacy, and war, not one single path.

Why Decolonization Accelerated After World War II

World War II changed the balance. European empires still wanted control, but they had a much harder time keeping it.

  • European weakness mattered. Britain, France, and the Netherlands came out of WWII exhausted, in debt, and focused on rebuilding at home.
  • Imperial prestige collapsed when Japan defeated European colonial regimes in Southeast Asia. Colonized peoples saw that Europeans were not unbeatable.
  • Allied talk about freedom created a huge contradiction. The Atlantic Charter talked about peoples choosing their government, so colonized groups asked why that did not include them.
  • The United Nations gave anticolonial leaders a place to appeal to world opinion, especially as more Asian and African states joined.

Cold War pressures

The Cold War pushed in both directions.

  • It could speed independence because the U.S., USSR, and China sometimes backed nationalist movements or pressured empires.
  • It could delay independence because Western powers feared communist takeovers and sometimes supported colonial rule or anticommunist local forces.

Bandung and nonalignment

At the Bandung Conference in 1955, Asian and African leaders met around anticolonialism. The Non-Aligned Movement in 1961 tried to avoid becoming tools of either the U.S. or USSR.

The exam loves this idea. Local nationalism plus global change explains decolonization better than either one alone.

Ways Colonial Groups Sought Independence

Colonial movements used overlapping methods, often at the same time.

Political organization and negotiation

  • Nationalist parties used petitions, elections, constitutional talks, and transitional governments.
  • The classic example is the Indian National Congress, which turned nationalism into a mass political force.

Mass protest and civil disobedience

  • Tactics included strikes, boycotts, tax resistance, and demonstrations.
  • Gandhi’s satyagraha used disciplined nonviolence to make British rule harder and less legitimate.
  • The Salt March in 1930 challenged British salt taxes and became a symbol of resistance.
  • The Quit India movement in 1942 demanded immediate British withdrawal.

Armed struggle

  • Some groups used guerrilla war, sabotage, bombings, and conventional fighting.
  • Key examples are the FLN in Algeria, the Viet Minh under Ho Chi Minh in Vietnam, and Indonesian resistance to Dutch return.

International diplomacy and superpower alignment

  • Nationalists appealed to the UN, world opinion, and foreign governments.
  • They also sought weapons, aid, and recognition from powerful allies.

Major Case Studies of Decolonization

India is the clearest example of mass nonviolent resistance, often associated with Gandhi’s campaigns like the Salt March.

Study guide illustration

Gandhi during the Salt March

PlaceMain movementHow independence cameKey point
IndiaIndian National Congress, GandhiNegotiation + mass protestPartition in 1947 created India and Pakistan and led to huge violence
IndonesiaSukarno and HattaDeclaration in 1945 + guerrilla war + diplomacyDutch transferred sovereignty in 1949
VietnamHo Chi Minh’s Viet MinhWar against FranceDien Bien Phu in 1954; Geneva Accords divided Vietnam
AlgeriaFLNViolent revolt against FranceSettler colony; Evian Accords gave independence in 1962

Algeria is especially important because the pieds-noirs settlers made compromise much harder, and the war helped trigger a political crisis in France itself.

Why Independence Was Delayed and What Changed After It

European powers delayed independence because colonies brought resources, markets, prestige, military bases, and strategic routes. Settler resistance made places like Algeria and Kenya especially violent. Colonial borders and weak institutions also made transfer of power difficult.

African cases you should know:

  • Ghana under Kwame Nkrumah gained negotiated independence in 1957.
  • Kenya saw the violent Mau Mau uprising before independence.
  • The Congo in 1960 showed how sudden Belgian withdrawal could produce chaos.
  • 1960 is the Year of Africa because 17 African countries became independent.
  • Angola and Mozambique stayed under Portugal until 1975, after the Carnation Revolution in Portugal.

Formal independence did not end outside influence. Neocolonialism, commodity dependence, and inherited colonial borders kept shaping new states.

The Suez Crisis in 1956 showed European decline clearly. Britain and France could no longer act like old imperial powers without superpower approval.

Key Takeaways

Decolonization was a process, not a single declaration or date.
Wilsonian self-determination raised hopes after World War I, but empires mostly stayed intact until after World War II.
The best explanation is indigenous nationalism plus weaker, discredited European empires after 1945.
“Negotiated independence” does not mean peaceful independence, and India is the best example.
Vietnam is the clearest case where decolonization merged directly into the Cold War.
Algeria is the key settler-colony example, which is why the war was so brutal.
1960 Year of Africa is a favorite fact because it shows how fast African independence accelerated.
Neocolonialism means sovereignty existed on paper even when outside powers still had major leverage.

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Notes

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