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NotesHistory (2028+) HLTopic 12.5
Unit 12 · Paper 3 · History of Asia and Oceania (HL) · Topic 12.5

IB History (2028+) HL — Korea (1840–1945)

Topic 12.5 of IB History (first exams 2028) covers Korea (1840–1945), which is part of Unit 12: Paper 3 · History of Asia and Oceania (HL). Students explore key concepts including Korea — challenges to the monarchy and opening up, Korea — regional rivalries and the Korean Empire, Korea — Japanese colonial rule and wartime impact. A strong understanding of korea (1840–1945) 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 Korea (1840–1945)

Key Idea: This topic tells one continuous story: a weak Korean monarchy gets pulled apart by rival empires, loses its independence in slow stages (1876 → 1905 → 1910), suffers 35 years of harsh colonial rule, and comes out in 1945 already split into two rival camps. Every sub-topic is a step on that same slide from vulnerability to division.

How this topic is tested (Paper 3)

Paper 3 gives you a choice of essay questions on your regional option. Each answer is a single essay worth 15 marks, built around a claim you must evaluate — usually phrased 'To what extent do you agree that...'. The skill being tested is NOT reciting facts. It is building an argument: take a side, support it with named evidence (dates, people, events) on BOTH sides of the debate, and end with a clear judgement. You do not need historiography or named historians for the top markband — a well-supported, decisive judgement using your own knowledge is enough.

Must-know facts — one line per sub-topic

Sub-topicCore storyKey dates & names
12.5.1 — A monarchy hollowed outSedo politics let in-law clans (the Andong Kim) run the court instead of the king. The Daewongun tried to fix this with reform and isolation, but Japan forced Korea open anyway; court rivalry then split three ways.Sedo politics (to 1863) · Donghak founded by Choe Je-u (1860) · Daewongun regent (1863-73) · Treaty of Ganghwa (1876) · Imo Mutiny (1882) · Gapsin Coup, Kim Ok-gyun (1884)
12.5.2 — War, reform, protectorateA peasant revolt (Donghak) triggered a war between China and Japan that China lost, ending Chinese influence. Korea's own reform attempts (Gabo, then the Korean Empire) could not stop Japan from becoming Korea's sole overlord after beating Russia too.Donghak Revolution (1894) · Sino-Japanese War & Shimonoseki (1894-95) · Queen Min assassinated (1895) · Korean Empire proclaimed, Gojong as Emperor (1897) · Independence Club banned (1898) · Russo-Japanese War (1904-05) · Eulsa Treaty, Itō Hirobumi (1905)
12.5.3 — Colony, resistance, and divisionJapan annexed Korea outright and ran it as an exploited colony. Peaceful protest (March First) was crushed but softened Japanese policy for a decade — until war from 1937 turned Korea into a forced-labour, conscription, and 'comfort women' resource base, while rival exiles built the two leaderships that would divide Korea in 1945.Annexation (1910) · Land Survey (1910-18) · March First / Samil Movement (1919) · Cultural Policy (1920s) · Second Sino-Japanese War (1937) · forced labour & conscription (1939-44) · Kim Il Sung (Soviet-backed, north) vs Syngman Rhee (US-backed, south) · liberation & division into occupation zones (1945)
  • Sedo politics — government by royal in-law clans (the Andong Kim) instead of the king; the root weakness behind everything that follows.
  • Donghak — 'Eastern Learning', a peasant movement teaching that all people are equal before heaven; its 1894 uprising triggered the Sino-Japanese War.
  • Daewongun — Gojong's father, regent 1863-73; fought clan corruption and enforced strict isolation, earning Korea the 'Hermit Kingdom' name.
  • Treaty of Ganghwa (1876) — Japan's unequal treaty forcing Korea's ports open, the first crack in Korean sovereignty.
  • Queen Min (Empress Myeongseong) — led the pro-Qing court faction; assassinated by Japanese agents in 1895.
  • Eulsa Treaty (1905) — made Korea a Japanese protectorate in all but name; Itō Hirobumi installed as Resident-General.
  • Annexation (1910) — formal end of Korean sovereignty; Korea becomes the colony of Chōsen.
  • March First Movement (1919) — nationwide peaceful protest, brutally suppressed, but pushed Japan toward a softer 'Cultural Policy' in the 1920s.
  • Total war mobilisation (1937-45) — forced labour, military conscription, and the 'comfort women' system turned Korea into a resource base for Japan's war.
  • Kim Il Sung vs Syngman Rhee — rival exiled independence leaders (communist/Soviet-backed vs anti-communist/US-backed) whose separate power bases became North and South Korea in 1948.

Modelled exam question 1

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

To what extent do you agree that foreign intervention, rather than Korea's own internal weakness, was chiefly responsible for Korea's loss of independence between 1863 and 1910?

🔒 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 questionEvaluate[15 marks]

"The years 1910-1945 were defined more by resistance than by exploitation." To what extent do you agree with this claim?

🔒 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 write a essay that just lists events in date order without ever answering 'to what extent'. Examiners want a decisive judgement, stated early and defended throughout — not a balanced-sounding fence-sit at the end. Pick a side, even a moderate one ('largely agree' or 'agree only to a limited extent'), and back it with named dates and actors.

What was Sedo politics? Government by powerful in-law clans (especially the Andong Kim) who controlled the court by marrying their daughters to the king, leaving the throne financially drained and corrupt through the mid-1800s.

Why does the Treaty of Ganghwa (1876) matter? It was Japan's unequal treaty forcing Korea's ports open, the first time a foreign power broke Korea's isolation by force — starting the slide toward loss of sovereignty.

What happened at Shimonoseki (1895)? The treaty ending the First Sino-Japanese War; China recognised Korean 'independence', which really just removed China as a check on Japan's growing control over Korea.

What was the Eulsa Treaty (1905)? A treaty forced on Korea after Japan defeated Russia, making Korea a Japanese protectorate in all but name and installing Itō Hirobumi as Resident-General.

What was the March First Movement (1919)? A nationwide peaceful protest against Japanese rule, violently suppressed within months, but significant enough to push Japan toward a decade of softer 'Cultural Policy'.

How did the war years (1937-45) set up Korea's division? Total-war mobilisation (forced labour, conscription, 'comfort women') intensified suffering, while rival exiled leaders Kim Il Sung (Soviet-backed) and Syngman Rhee (US-backed) built separate power bases that became North and South Korea after Japan's sudden 1945 surrender.

1) Memorise the four sovereignty-loss dates in order: 1876 (Ganghwa) → 1895 (Shimonoseki removes China as protector) → 1905 (Eulsa) → 1910 (Annexation) — this timeline anchors almost every essay. 2) Always name at least one specific person and one specific treaty/event per paragraph. 3) For 'to what extent' questions, state your judgement in your first sentence, not just your last. 4) Link the ending (Kim Il Sung vs Syngman Rhee) back to the 1945 division — examiners reward seeing the whole topic as one connected story, not three separate ones.

What you'll learn in Topic 12.5

  • 12.5.1 Korea — challenges to the monarchy and opening up
  • 12.5.2 Korea — regional rivalries and the Korean Empire
  • 12.5.3 Korea — Japanese colonial rule and wartime impact
Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 12.5 Korea (1840–1945)

12.5.1

Korea — challenges to the monarchy and opening up

Notes
12.5.2

Korea — regional rivalries and the Korean Empire

Notes
12.5.3

Korea — Japanese colonial rule and wartime impact

Notes

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Topic 12.5 Korea (1840–1945) forms a core part of Unit 12: Paper 3 · History of Asia and Oceania (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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