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NotesHistory (2028+) HLTopic 13.12
Unit 13 · Paper 3 · History of Europe (HL) · Topic 13.12

IB History (2028+) HL — Europe during and after the Cold War (1945–2020)

Topic 13.12 of IB History (first exams 2028) covers Europe during and after the Cold War (1945–2020), which is part of Unit 13: Paper 3 · History of Europe (HL). Students explore key concepts including Cold War Europe — origins and divided Germany, Cold War Europe — West and East, Cold War Europe — integration and after. A strong understanding of europe during and after the cold war (1945–2020) is essential for IB History (2028+) HL exams and builds the foundation for connected topics across the syllabus.

Higher Level students should use this topic hub as a map: start with the shared sub-topics, then follow the HL-only extensions and exam-skill links where this topic asks for deeper analysis.

Exam technique guidePractice questions

Key concepts in Europe during and after the Cold War (1945–2020)

Key Idea: In 1945 the wartime allies split Europe in two — and by 1949 that split had hardened into the Cold War. This topic follows that whole arc: why the alliance broke down, how the West (NATO, the EEC) and the East (Warsaw Pact, COMECON) built two totally different systems, and how Europe tried to rebuild itself as one continent again after 1990 through the EU — only to hit new limits with the Eurozone crisis and Brexit. The thread running through all three sub-topics is the same: cooperation always has a cost, and integration always creates both winners and resisters.

How this topic is tested

You'll answer two essays, each a 'To what extent do you agree...' question worth 15 marks. There's no source booklet — you argue from your own knowledge of Europe during and after the Cold War. Examiners want a clear thesis stated immediately, evidence weighed on BOTH sides of the claim with precise names and dates, and a substantiated judgement at the end — never a flat 'yes' or a list that just stops. You do NOT need historiography (naming historians) to reach the top band. What matters is your own reasoned argument, built on specific facts. You can mention the orthodox/revisionist/post-revisionist debate as evidence of complexity, but the mark is for YOUR judgement, not for reciting theirs.

Must-know facts — every sub-topic

This topic has three micros. Together they cover why the Cold War began, how it split Europe into two opposite systems, and how Europe rebuilt itself after 1990.

MicroFocusMust-know names, dates, facts
13.12.1Origins of the Cold War, 1945-1949Yalta / Potsdam (Feb / Jul-Aug 1945) — vague promises on 'free elections' in Eastern Europe, interpreted differently by Stalin vs Roosevelt/Churchill. Poland was the flashpoint — Stalin installed a communist government, breaking the Yalta promise. Truman Doctrine (March 1947) commits the US to containing communism. Marshall Plan (June 1947) offers $13 billion in aid; Stalin's refusal + Cominform (Sept 1947) splits Europe into two economic blocs. Berlin Blockade & Airlift (1948-49) — Stalin cuts off West Berlin over currency reform; the US/Britain fly in supplies for 11 months; Stalin backs down, and FRG/GDR are founded as two separate states in 1949. Berlin Wall (13 Aug 1961) stops the 2.7 million-strong refugee exodus; falls 9 Nov 1989; reunification via the 'Two Plus Four' Treaty, 3 Oct 1990 (Chancellor Helmut Kohl).
13.12.2Two blocs: West vs East, 1949-1989West: NATO founded April 1949 (collective security); West Germany joins 1955; EEC founded via the Treaty of Rome (1957) — France, West Germany, Italy, Belgium, Netherlands, Luxembourg — built on the 'Founding Fathers' Jean Monnet and Robert Schuman's vision. Charles de Gaulle pulls France out of NATO's integrated command in 1966. East: Warsaw Pact (May 1955), formed in direct response to West Germany joining NATO — Soviet troops crush the Prague Spring (Czechoslovakia, 1968) under its banner. COMECON (1949) ties satellite economies to unequal trade with the USSR. Josip Broz Tito's Yugoslavia breaks from Moscow in 1948 and survives — because his own partisans, not the Red Army, had liberated the country. Other revolts (East Germany 1953, Hungary 1956, Prague Spring 1968) were all crushed by Soviet/Pact tanks.
13.12.3Rebuilding Europe: the EU after 1990Maastricht Treaty (1992) turns the European Community into the European Union. Expansion waves: 1995 (Austria, Finland, Sweden), 2004 'Big Bang' (ten states including Poland, Hungary, Czech Republic), 2007 (Bulgaria, Romania), 2013 (Croatia). Schengen Area scraps passport checks between members. Euro launched 1999/2002. Eurozone/Greek debt crisis (from 2009) exposes the cost of a shared currency without a shared budget. Brexit: UKIP (Nigel Farage) pushes withdrawal into the mainstream 1993-2015; referendum called by PM David Cameron in 2016; Leave wins 52-48% on 23 June 2016; the UK formally leaves on 31 January 2020.
  • Marshall Plan vs Cominform (1947) — the moment economic aid (or its refusal) hardened ideological rivalry into two fixed blocs.
  • Berlin Blockade (1948-49) and the Berlin Wall (1961) — Germany as the Cold War's physical front line, from first standoff to the era's most iconic barrier.
  • NATO (1949) vs the Warsaw Pact (1955) — Cold War action-reaction: the Pact was formed specifically because West Germany joined NATO.
  • Tito's Yugoslavia, 1948 — proof a communist state could defy Moscow and survive, because it had never been occupied by the Red Army in the first place.
  • Maastricht Treaty (1992) and 'Big Bang' expansion (2004) — the EU turning Cold War division into shared membership for ex-communist states.
  • Brexit (2016/2020) — the clearest evidence that European integration was never universally welcomed, even by a founding-era member.

Modelled exam question 1

IB-style questionTo what extent do you agree[15 marks]

To what extent do you agree that economic factors, rather than ideology, best explain the division of Europe into two opposing blocs by 1955?

🔒 Model answer plan

See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.

Unlock free for 7 days →

Modelled exam question 2

IB-style questionTo what extent do you agree[15 marks]

To what extent do you agree that European political integration since 1990 has strengthened, rather than divided, Europe?

🔒 Model answer plan

See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.

Unlock free for 7 days →
Important: Do not flatten this topic into 'the Cold War ended and then Europe united happily.' Every sub-topic here is really a debate: causation is contested in 13.12.1 (orthodox/revisionist/post-revisionist), the two blocs were not monolithic in 13.12.2 (Tito defied Moscow; de Gaulle resented Washington), and post-1990 integration in 13.12.3 had real costs (the Eurozone crisis, Brexit) alongside real gains. Examiners reward answers that weigh named, dated evidence on both sides and reach a clear judgement — not answers that pick one dramatic cause or one flat narrative and stop there.

What broke the wartime alliance apart by 1949? Ideological incompatibility (democracy/free markets vs one-party communism) combined with the Marshall Plan (1947) and Stalin's refusal via Cominform to split Europe economically, and the Berlin Blockade (1948-49) to split it physically — leading to FRG and GDR being founded as separate states in 1949.

Why did Stalin build the Berlin Wall in 1961? Roughly 2.7 million East Germans had fled to the West through Berlin between 1949 and 1961, draining the GDR's doctors, engineers and teachers. Khrushchev's ultimatum failed to force the West out, so East German troops sealed the border overnight on 13 August 1961 to stop the exodus.

Why was the Warsaw Pact formed in 1955? Directly in response to West Germany joining NATO days earlier — a clear example of Cold War action-reaction. It united the USSR with Poland, East Germany, Czechoslovakia, Hungary, Romania, Bulgaria and Albania, and was later used to crush the Prague Spring in Czechoslovakia (1968).

Why did Tito's Yugoslavia survive breaking from Moscow in 1948? Unlike Poland or Hungary, Yugoslavia was never liberated by the Red Army — Tito's own partisans defeated the Nazis themselves. That meant Tito owed Stalin nothing, had his own army and popular legitimacy, and no Soviet troops occupying his territory to enforce obedience.

What was the 'Big Bang' EU expansion? In 2004, ten countries joined the EU at once, including Poland, Hungary and the Czech Republic — most of them recently freed from Soviet control. It was the largest single expansion, extending EU membership deep into former Warsaw Pact territory.

Why is Brexit useful evidence in a 'to what extent' essay on EU integration? Brexit shows integration was not universally welcomed even by long-standing members. The UK, which had joined in 1973, voted 52-48% to leave on 23 June 2016 and formally exited on 31 January 2020, citing sovereignty and immigration concerns.

1) Name specific dates and people (Marshall Plan 1947, Warsaw Pact 1955, Maastricht 1992, Brexit 2016/2020) — vague answers score low. 2) Always state your extent-judgement in words ('largely', 'only to a moderate extent'), not just 'both sides mattered'. 3) Link sub-topics together: the same Cold War division you study in 13.12.1-13.12.2 is exactly what the EU in 13.12.3 was built to heal — use that connection to show range. 4) Structure every essay the same way: thesis, evidence for, evidence against, judgement.

What you'll learn in Topic 13.12

  • 13.12.1 Cold War Europe — origins and divided Germany
  • 13.12.2 Cold War Europe — West and East
  • 13.12.3 Cold War Europe — integration and after
Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 13.12 Europe during and after the Cold War (1945–2020)

13.12.1

Cold War Europe — origins and divided Germany

Notes
13.12.2

Cold War Europe — West and East

Notes
13.12.3

Cold War Europe — integration and after

Notes

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Topic 13.12 Europe during and after the Cold War (1945–2020) forms a core part of Unit 13: Paper 3 · History of Europe (HL) in IB History (2028+) HL. Mastering these concepts will strengthen your understanding of connected topics across the syllabus and prepare you for exam questions that require analysis, evaluation, and real-world application.

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