| Learning Objective | Preview: Unit 9 Key Concepts |
|---|---|
Unit 9.A |
|
Cold War and Contemporary Europe
AP European History · Topic 9
9:37
Unit 9: Cold War and Contemporary Europe
This unit has two halves that must be held together. Division, until 1991. And integration, running alongside it and then beyond it. They are not sequential…
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9.1
Contextualizing Cold War and Contemporary Europe
Syllabus
Source: College Board AP Course and Exam Description
Unit 9 takes Europe from 1945 to the present. The same four key concepts as Unit 8 apply, but the emphasis shifts: a polarised state order, competing conceptions of the individual and the state, continued questioning of objective knowledge, and demographic and economic change reshaping everyday life.
The unit has two halves that must be held together - division until 1991, and integration running alongside and then beyond it.
9.2
Rebuilding Europe
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ECD | Unit 9.B |
|
Source: College Board AP Course and Exam Description
Marshall Plan 马歇尔计划 funds from the United States financed an extensive reconstruction of industry and infrastructure and stimulated an economic revival in Western Europe.
The Marshall Plan is examinable in two directions at once: it rebuilt Western Europe, and by being refused for the Soviet bloc it helped harden the division that defines the rest of the unit.
| English |
|---|
| Marshall Plan/ˈmɑːʃl plæn/ |
9.3
The Cold War
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
INT | Unit 9.C |
|
Illustrative examples:
- Hot wars outside of Europe in which the United States and the USSR supported opposite sides:
- Korean War
- Vietnam War
- Yom Kippur War
- Soviet invasion of Afghanistan
Source: College Board AP Course and Exam Description
Despite efforts to maintain international cooperation through the newly created United Nations 联合国, deep-seated tensions between the two blocs produced the Cold War.
The CED lists how it was actually conducted, and the list is worth memorising because questions ask for methods:
- propaganda campaigns 宣传战;
- covert actions 秘密行动;
- limited "hot wars" 有限热战 in other regions;
- an arms race 军备竞赛.
Note what is absent: direct war between the principals. The methods list is the answer to "how could a conflict this intense produce no direct war".

| English |
|---|
| United Nations/juːˈnaɪtɪd ˈneɪʃnz/ |
| propaganda campaigns/ˌprɒpəˈɡændə kæmˈpeɪnz/ |
| covert actions/kəʊˈvɜːt ˈækʃnz/ |
| limited "hot wars"/ˈlɪmɪtɪd hɒt wɔːz/ |
| arms race/ɑːmz reɪs/ |
9.4
Two Superpowers Emerge
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ECD | Unit 9.D |
|
Illustrative examples:
- The world monetary and trade system:
- International Monetary Fund (IMF)
- World Bank
- General Agreement on Tariffs and Trade (GATT)
- World Trade Organization (WTO)
- Revolts against Soviet control:
- Prague Spring
- Hungarian Revolt
Source: College Board AP Course and Exam Description

- The United States exerted strong military, political, and economic influence in Western Europe, leading to the creation of NATO 北约.
- Countries east of the Iron Curtain 铁幕 came under the military, political, and economic domination of the Soviet Union.
- Central and Eastern European nations within the Soviet bloc followed an economic model based on central planning 中央计划 and extensive social welfare provision.
- Those nations' relationship with the Soviet Union oscillated between repression and reform - which is the CED's own phrase and a better answer than either alone.
- The rise of new nationalisms in Central and Eastern Europe eventually brought peaceful revolution in most countries, but violent conflict in some.
| English |
|---|
| NATO/ˈneɪtəʊ/ |
| Iron Curtain/ˈaɪən ˈkɜːtn/ |
| central planning/ˈsentrəl ˈplænɪŋ/ |
9.5
Postwar Nationalism, Ethnic Conflict, and Atrocities
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
NEI | Unit 9.E |
|
Illustrative examples:
- Nationalist violence:
- Ireland
- Chechnya
- Separatist movements:
- Basque (ETA)
- Flemish
- Ethnic cleansing: §Bullet Bosnian Muslims
- Albanian Muslims of Kosovo
Source: College Board AP Course and Exam Description
Nationalist and separatist movements, along with ethnic conflict and ethnic cleansing, periodically disrupted the post-war order. The examinable point is that 1945 did not end the problem of nationalism in Europe; it suppressed it in some places and postponed it in others.
9.6
Contemporary Western Democracies
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
ECD | Unit 9.F |
|
Source: College Board AP Course and Exam Description
Postwar economic growth supported an increase in welfare benefits 福利待遇; subsequent economic stagnation 经济停滞 led to criticism and scaling back of the welfare state 福利国家.
Hold both halves. Growth funded the welfare state; the end of growth is what put it under argument - which is a causal claim, not just a sequence of events.
| English |
|---|
| increase in welfare benefits/ˈɪŋkriːs ɪn ˈwelfeə ˈbenɪfɪts/ |
| economic stagnation/ˌiːkəˈnɒmɪk stæɡˈneɪʃn/ |
| welfare state/ˈwelfeə steɪt/ |
9.7
The Fall of Communism
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
SOP | Unit 9.G |
|
Illustrative examples:
- Collapse of Soviet Union and satellites:
- Fall of the Berlin Wall
- Polish elections in 1989
Source: College Board AP Course and Exam Description
Following a long period of economic stagnation, Mikhail Gorbachev's 戈尔巴乔夫 internal reforms of perestroika 改革 and glasnost 开放 - despite being intended to strengthen the system - contributed to its collapse.
The collapse of the USSR in 1991 ended the Cold War and led to the establishment of capitalist economies throughout Eastern Europe.
The shape of the argument matters: reform intended to save a system helped end it. That is the kind of claim an evaluation question rewards.

Trace the collapse, then split its ending
The CED pairs 'peaceful revolution in most countries' with 'violent conflict in some'. Students drop the second half.
| English |
|---|
| Mikhail Gorbachev's/ˈmɪkaɪl ˈɡɔːbəʃevz/ |
| perestroika/ˈperɪstrɔɪkə/ |
| glasnost/ˈɡlæsnɒst/ |
9.8
20th-Century Feminism
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
SCD | Unit 9.H |
|
Illustrative examples:
- Feminists and feminism: §Bullet Simone de Beauvoir
- Second-wave feminism
- New modes of managing reproduction:
- Birth control pill
- Scientific means of fertilization
- Women who attained high political office:
- Margaret Thatcher of Great Britain
- Mary Robinson of Ireland
- Édith Cresson of France
Source: College Board AP Course and Exam Description
The lives of women were defined by family and work responsibilities, economic changes, and feminism. Across the century: expanding participation in paid work, especially during both wars; the extension of political rights; and organised movements that changed law and expectation in the postwar decades.
9.9
Decolonization
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
INT | Unit 9.I |
|
Illustrative examples:
- Indigenous nationalist movements:
- Indian National Congress
- Algeria’s National Liberation Front (FLN)
- Ho Chi Minh’s Viet Minh
- Sukarno and Indonesian nationalism
Source: College Board AP Course and Exam Description
The process of decolonisation 去殖民化 occurred over the course of the century with varying degrees of cooperation, interference, or resistance from the European imperial powers.
The consequence for Europe itself is the part students omit: losing empire changed what a European state was, and it produced the migration examined two topics below.
| English |
|---|
| decolonisation/dɪˌkɒlənaɪˈzeɪʃn/ |
9.10
The European Union
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
NEI | Unit 9.J |
|
Unit 9.K |
|
Illustrative examples:
- Challenges to national sovereignty within the EU:
- The euro
- European Parliament
- Issue of remaining in the EU (e.g., Britain’s “Brexit”)
- Free movement across borders
Source: College Board AP Course and Exam Description
European states began to set aside nationalist rivalries in favour of economic and political integration, forming a series of institutions that became the European Union 欧盟.
And the tension the CED names explicitly: EU member nations continue to balance questions of national sovereignty against the responsibilities of membership in an international body. That balance is the examinable issue, not the institutional history.

Weigh membership against sovereignty
The CED says members 'continue to balance' these — it is an unresolved tension, and an answer that resolves it has answered a different question.
| English |
|---|
| European Union/ˌjʊərəˈpɪən ˈjuːnɪən/ |
9.11
Migration and Immigration
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
SCD | Unit 9.L |
|
Illustrative examples:
- Anti-immigration, conservative parties:
- French National Front
- Austrian Freedom Party
Source: College Board AP Course and Exam Description
- Because of the economic growth of the 1950s and 1960s, migrant workers 外来劳工 from southern Europe, Asia, and Africa immigrated to northern and western Europe.
- Increased immigration altered Europe's religious makeup 宗教构成, causing debate and conflict over the role of religion in public life.
Note the CED's own causal order: economic growth created labour demand, and migration followed it. The debates came afterwards.
| English |
|---|
| migrant workers/ˈmaɪɡrənt ˈwɜːkəz/ |
| altered Europe's religious makeup/ˈɒltəd ˈjʊərəps rɪˈlɪdʒəs ˈmeɪkʌp/ |
9.12 9.13
Technology and Globalization
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
TSI | Unit 9.M |
|
Illustrative examples:
- Medical theories and technologies:
- Birth control
- Abortion
- Fertility treatments
- Genetic engineering
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
TSI | Unit 9.N |
|
Illustrative examples:
- New communication technologies:
- Telephone
- Radio
- Television
- Computer
- Cell phone
- Internet
Source: College Board AP Course and Exam Description
- Medical theories and technologies extended life but posed social and moral questions that eluded consensus 未能形成共识.
- Increased imports of US technology and popular culture after the war generated both enthusiasm and criticism 既受欢迎也遭批评.
- New communication and transportation technologies multiplied connections across space and time, transforming daily life.
- Green parties 绿党 in Western and Central Europe challenged consumerism and urged sustainable development 可持续发展.
| English |
|---|
| eluded consensus/ɪˈluːdɪd kənˈsensəs/ |
| both enthusiasm and criticism/bəʊθ enˈθjuːziæzəm ænd ˈkrɪtɪsɪzəm/ |
| Green parties/ɡriːn ˈpɑːtiz/ |
| sustainable development/səˈsteɪnəbl dɪˈveləpmənt/ |
9.14
Culture, Arts, and Demographic Trends
Syllabus
| Thematic Focus | Learning Objective | Historical Developments |
|---|---|---|
CID | Unit 9.O |
|
Illustrative examples:
- Christian responses to totalitarianism:
- Dietrich Bonhoeffer
- Martin Niemöller
- Pope John Paul II
- Solidarity
- New movements in the visual arts:
- Cubism
- Futurism
- Dadaism
- Surrealism
- Abstract Expressionism
- Pop Art
- New architectural movements:
- Bauhaus
- Modernism
- Postmodernism
- New movements in music:
- Igor Stravinsky
- Arnold Schoenberg
- Richard Strauss
- Writers:
- Franz Kafka
- James Joyce
- Erich Maria Remarque
- Virginia Woolf
- Jean-Paul Sartre
- Government policies promoting population growth: §Bullet Neonatalism
- Childcare facilities
Source: College Board AP Course and Exam Description
- The effects of world war and economic depression undermined confidence in science and human reason, giving impetus to new intellectual currents.
- Organised religion continued to play a role in European social and cultural life despite these challenges - a continuity worth stating, because answers tend to assume simple secularisation.
- The arts were defined by experimentation, self-expression, subjectivity, and increasing global influence.
- Mass production, new food technologies, and industrial efficiency increased disposable income and created a consumer culture 消费文化.
- With postwar recovery the birth rate rose dramatically - the baby boom 婴儿潮 - often promoted by government policy.
- Various movements - women's movements, political and social movements, gay and lesbian movements - pressed for rights and recognition.
- Intellectuals and youth reacted against perceived bourgeois materialism, most significantly in the movements of the later 1960s.
| English |
|---|
| consumer culture/kənˈsuːmə ˈkʌltʃə/ |
| baby boom/ˈbeɪbi buːm/ |
9.15
Continuity and Change in the 20th and 21st Centuries
Syllabus
| Learning Objective | Review: Unit 9 Key Concepts |
|---|---|
Unit 9.P |
|
Source: College Board AP Course and Exam Description
The unit's reasoning skill is continuity and change.
Original worked example. For original short-answer practice, try "Explain one way in which European integration after 1945 represented a change from earlier European international relations." An illustrative answer states the change against what it replaced: "Before 1945 European states pursued national interest through competing alliances and, repeatedly, war. After 1945 states began to set aside those rivalries in favour of shared institutions, accepting binding common rules on trade and law - so a dispute between members became a matter for negotiation within an institution rather than a matter for the balance of power." Notice that a change claim needs the prior state of affairs to be named.
9.15
Worked example: a short-answer question
Each part needs only one or two sentences: answer the question, cite one specific piece of evidence, and explain how it supports the answer.
Answer (a), (b) and (c).
(a) Briefly describe ONE way Western Europe was rebuilt after 1945.
(b) Briefly describe ONE symbol of Cold War division in Europe.
(c) Briefly describe ONE step toward European integration.
Model answer.
- (a) American aid through the Marshall Plan funded reconstruction and trade in Western Europe.
- (b) The Berlin Wall, built in 1961 and opened in 1989, divided East and West Berlin.
- (c) The Maastricht Treaty, signed in 1992 and effective in 1993, created the European Union, and the euro entered circulation in 2002.
9.15
Exam tips
- The unit has two simultaneous stories - division until 1991 and integration throughout. Weak answers tell only one.
- Memorise the Cold War's methods: propaganda, covert action, limited hot wars, arms race. The absence of direct war is the point.
- "Oscillated between repression and reform" is the CED's phrase for the Soviet bloc. It beats either half alone.
- Gorbachev's reforms were intended to strengthen the system. That irony is what an evaluation question is looking for.
- The welfare state grew on growth and was questioned when growth stopped. State the causal link.
- Migration followed labour demand created by the postwar boom. Get the causal order right before discussing the debates.
Vocabulary card meanings
Marshall Plan: US economic aid that helped rebuild Western Europe after 1947. United Nations: The international organisation founded in 1945 to maintain peace. propaganda campaigns: Organised messaging meant to shape public belief during the Cold War. covert actions: Secret operations, short of open war, by intelligence services. limited "hot wars": Actual fighting kept local, such as Korea, inside the larger Cold War. arms race: Rival powers competing to build more and deadlier weapons. Iron Curtain: The divide between Soviet-dominated Eastern Europe and the West. central planning: An economy directed by state targets rather than by market prices. increase in welfare benefits: Growth in state payments and services for citizens after 1945. economic stagnation: A long period of weak growth, associated with the 1970s. welfare state: A state that provides broad social security, health care, and education. Mikhail Gorbachev's: The Soviet leader's policies of economic restructuring and greater openness. perestroika: The Soviet programme of restructuring the economy in the late 1980s. glasnost: The Soviet policy of more open speech and publication under Gorbachev. decolonisation: European empires giving up, or losing, their overseas colonies. European Union: The political and economic union that grew from postwar European cooperation. migrant workers: People who move to another country to take jobs. altered Europe's religious makeup: Immigration and secularisation changing which faiths are present. eluded consensus: Issues on which governments and publics could not agree. both enthusiasm and criticism: Responses that welcomed integration and responses that opposed it. Green parties: Political parties organised around environmental protection. consumer culture: A way of life organised around buying goods and brands. baby boom: The sharp rise in births in the years after the Second World War.
Interactive lessons on this topic
Work through it step by step, with instant-check exercises.
- The Same Four Threads, Finished
- The Economic Miracle
- An Iron Curtain, and a Global Stage
- Two Blocs, Two Models
- Conflict After the Peace
- The Welfare State and Its Critics
- How the Cold War Ended
- Women's Roles and Status
- Decolonisation
- The European Union
- Migration and Its Reception
- Medicine's Unsettled Questions
- Globalisation, Welcomed and Resisted
- How European Culture Changed
- What It Means to Be European