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NotesHistory HLTopic 20.11
Unit 20 · Paper 3 · History of Asia and Oceania · Topic 20.11

IB History HL — Japan (1912–1990)

Topic 20.11 of IB History covers Japan (1912–1990), which is part of Unit 20: Paper 3 · History of Asia and Oceania. Students explore key concepts including Japan 1912-1932: From Taisho Democracy to the Rise of Militarism, Japan (1912–1990) Part 2: Pacific War, US Occupation and the Economic Miracle. A strong understanding of japan (1912–1990) is essential for IB History 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 Japan (1912–1990)

Key Idea: Japan from 1912 to 1990: a fragile democracy gave way to military rule, which led to war and defeat; then US occupation and an economic miracle rebuilt the country.

From democracy to militarism, 1912 to 1932

  1. Post-war status — Paris gave territory but refused racial equality; Washington limited the navy and ended the British alliance.
  2. Taisho democracy — Party cabinets, male suffrage and a freer press, but also the Peace Preservation Law.
  3. Militarism — Depression hardship, an independent army and the murders of Hara, Hamaguchi and Inukai ended party rule by 1932.

War, occupation and the miracle

  • The 1940 US oil embargo pushed Japan to gamble on Pearl Harbor (1941).
  • US industry, Midway (1942), island-hopping and the atomic bombs brought defeat.
  • MacArthur's 1947 constitution: a symbolic emperor, Article 9, votes for women and land reform; the 'reverse course' from 1950 rebuilt Japan.
  • Growth came from Korean War orders, MITI planning, disciplined workers and US protection, until the bubble burst in 1990 to 1991.
Status, then democracy, then militarism; then defeat, occupation and growth.

How did the Depression help the militarists? Hardship discredited party politicians, and ultranationalists won support by blaming them.

Why did US policy towards Japan change around 1950? The Cold War and the Korean War made rebuilding Japan useful.

What does Article 9 do? It gives up war.

Name two social effects of globalisation in Japan. Smaller families and more working women.

What you'll learn in Topic 20.11

  • 20.11.1 Japan 1912-1932: From Taisho Democracy to the Rise of Militarism
  • 20.11.2 Japan (1912–1990) Part 2: Pacific War, US Occupation and the Economic Miracle
Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 20.11 Japan (1912–1990)

20.11.1

Japan 1912-1932: From Taisho Democracy to the Rise of Militarism

Notes
20.11.2

Japan (1912–1990) Part 2: Pacific War, US Occupation and the Economic Miracle

Notes

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Topic 20.11 Japan (1912–1990) forms a core part of Unit 20: Paper 3 · History of Asia and Oceania in IB History 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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