Successor states: new borders, minorities and economic links
Compare Saint-Germain, Trianon and Neuilly without assuming new borders created homogeneous or equally satisfied societies.
Exam scope and assessment notes
Partial 2026 course: introductory context across the twelve AS topics, with selected document workshops, not full AS or A Level preparation. All three Paper 3 alternatives have introductory context, historiography and original interpretation exercises; Italy, Stalin’s Russia, Hitler’s Germany and Britain have introductory depth pathways across their four enquiries. The USA in the late 1940s/1950s and the 1960s/1970s have introductory American depth pathways; the 1980s/early-1990s theme now introduces all four enquiries with original teaching and two longer essay workshops. All four American themes now have introductory teaching and longer essay workshops, including US foreign policy, 1944–1992. The US–Soviet theme introduces all four enquiries through thirty core lessons and two longer essay workshops. Forty-one lessons introduce all four East and Southeast Asia enquiries: eight on post-war change, nine on Korea, twelve on Vietnam and twelve on Sino-American relations. Eight lessons introduce the African independence enquiry through Ghana, Nigeria, Senegal, Kenya and comparative reasoning. Nine further lessons introduce government, economic and social challenges after independence. Thirteen further lessons introduce Cold War involvement, Chinese support, non-alignment and Pan-Africanism. Twelve further lessons introduce UN involvement in Congo and Somalia, with 1993–1995 explicitly labelled as later context beyond the theme’s 1992 endpoint. Ten lessons introduce the creation-of-Israel enquiry. Twenty further lessons introduce wars and peace efforts in 1948–1979. Seventeen further lessons introduce superpower motives, oil, American and Soviet policies and their consequences through 1991. Twenty-one further lessons introduce the Iranian Revolution, Iran–Iraq War and 1990–1991 Gulf War. All four 2026 Middle East enquiries have introductory lessons; broader reading, depth, specialist review and full assessment remain unfinished. The separate 2027–2029 requirements are not mapped by these 2026 lessons. A separately labelled revised-year orientation and Eastern Europe enquiries 7.1–7.4 introductions and South Africa enquiries 8.1–8.3 and Zimbabwe enquiry 8.4, followed by Malaya enquiry 9.1 and introductory sequences for Malaysia formation enquiry 9.2 and Indonesian nationalism enquiry 9.3, with partial preparation, revolution, 1950s challenges and New Order teaching in enquiry 9.4, are available; other revised teaching remains unfinished. Source summaries are original StudyForA paraphrases, not quotations, complete documents or simulated eyewitness sources. Primary documents, historians’ arguments and original exercises are identified separately. Guided source comparisons, interpretation exercises and analytical models are not full papers, calibrated marking or Cambridge grades. Broader authentic source reading, historical depth and subject-specialist review remain required. The League of Nations and international relations in the 1920s belongs to International Paper 2 in 2026. China and Japan is the separate International Paper 1 topic, with introductory context and guided source workshops. All three International outline topics have introductory teaching; broader depth and full-paper preparation remain required. Keep the International route separate from European and American alternatives.
Before you begin
- Place events in chronological order
- Distinguish a historical document from a later account and from a student argument
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What turns a list of causes into a historical explanation?
What you will learn
- Identify the separate Austrian, Hungarian and Bulgarian settlements
- Explain the tension between national claims, borders and minority protection
- Connect imperial collapse and new frontiers with economic and political problems
Develop an evidence-based answer
- Write your answer before opening the model.
- Read the linked source alongside the short StudyForA paraphrase. Distinguish primary documents from later accounts, and what each source claims from what it proves.
Partial 2026 course: introductory context across the twelve AS topics, with selected document workshops, not full AS or A Level preparation. All three Paper 3 alternatives have introductory context, historiography and original interpretation exercises; Italy, Stalin’s Russia, Hitler’s Germany and Britain have introductory depth pathways across their four enquiries. The USA in the late 1940s/1950s and the 1960s/1970s have introductory American depth pathways; the 1980s/early-1990s theme now introduces all four enquiries with original teaching and two longer essay workshops. All four American themes now have introductory teaching and longer essay workshops, including US foreign policy, 1944–1992. The US–Soviet theme introduces all four enquiries through thirty core lessons and two longer essay workshops. Forty-one lessons introduce all four East and Southeast Asia enquiries: eight on post-war change, nine on Korea, twelve on Vietnam and twelve on Sino-American relations. Eight lessons introduce the African independence enquiry through Ghana, Nigeria, Senegal, Kenya and comparative reasoning. Nine further lessons introduce government, economic and social challenges after independence. Thirteen further lessons introduce Cold War involvement, Chinese support, non-alignment and Pan-Africanism. Twelve further lessons introduce UN involvement in Congo and Somalia, with 1993–1995 explicitly labelled as later context beyond the theme’s 1992 endpoint. Ten lessons introduce the creation-of-Israel enquiry. Twenty further lessons introduce wars and peace efforts in 1948–1979. Seventeen further lessons introduce superpower motives, oil, American and Soviet policies and their consequences through 1991. Twenty-one further lessons introduce the Iranian Revolution, Iran–Iraq War and 1990–1991 Gulf War. All four 2026 Middle East enquiries have introductory lessons; broader reading, depth, specialist review and full assessment remain unfinished. The separate 2027–2029 requirements are not mapped by these 2026 lessons. A separately labelled revised-year orientation and Eastern Europe enquiries 7.1–7.4 introductions and South Africa enquiries 8.1–8.3 and Zimbabwe enquiry 8.4, followed by Malaya enquiry 9.1 and introductory sequences for Malaysia formation enquiry 9.2 and Indonesian nationalism enquiry 9.3, with partial preparation, revolution, 1950s challenges and New Order teaching in enquiry 9.4, are available; other revised teaching remains unfinished. Source summaries are original StudyForA paraphrases, not quotations, complete documents or simulated eyewitness sources. Primary documents, historians’ arguments and original exercises are identified separately. Guided source comparisons, interpretation exercises and analytical models are not full papers, calibrated marking or Cambridge grades. Broader authentic source reading, historical depth and subject-specialist review remain required.
Document focus and short analytical model
Each document card is an original English paraphrase of selected provisions or arguments. It is not a quotation or a complete Paper 1 source set. The League of Nations and international relations in the 1920s belongs to International Paper 2 in 2026. China and Japan is the separate International Paper 1 topic, with introductory context and guided source workshops. All three International outline topics have introductory teaching; broader depth and full-paper preparation remain required. Keep the International route separate from European and American alternatives.
Successor states and the peace settlement · original StudyForA paraphrase of later scholarly context
[1] The settlement recognised changed state boundaries after imperial collapse while attempting to combine national claims, security and economic considerations. New or enlarged states also contained minorities, and changing borders disrupted established connections.
[2] This is a later comparative synthesis, not an invented joint statement by the affected populations. Distinguish the separate treaties, local experiences and minority protections from evidence of how those protections actually operated.
1. Assess why the successor-state settlement remained contested.
Compare after trying
Imperial collapse opened opportunities for national movements, and the settlements recognised new or enlarged states. That changed political authority without producing populations with one identity inside each frontier. Territorial gains could satisfy one group while creating grievances for another.
Minority protections acknowledged these tensions, but their significance depended on administration and practical remedies. A guarantee did not itself demonstrate consent or equal treatment. The separate Austrian, Hungarian and Bulgarian settlements must also be distinguished rather than treating them as one uniform experience.
Economic adjustment added another source of friction. Customs, currencies and borders could divide established supply and market networks, creating costs alongside the benefits of sovereignty. Contestation consequently involved legitimacy, rights, resources and security together. Cooperation and adaptation remained possible, so the existence of problems does not prove that every new state was incapable of functioning or that later conflict was inevitable.
Why this response fits
- Connects national recognition with the creation of minorities.
- Includes economic mechanisms without declaring inevitable failure.
Separate settlements addressed different states
Saint-Germain in September 1919 dealt with Austria, Neuilly in November 1919 with Bulgaria, and Trianon in June 1920 with Hungary. They were not extra names for the German treaty. The collapse of Austria-Hungary had already produced political change and conflict before the agreements were signed. Peacemakers recognised and adjusted new boundaries while seeking security and compensation; they did not create every new institution or national movement from nothing at a conference table.
The Austrian settlement recognised the loss of former imperial territories and constrained union with Germany without League consent. Hungary lost extensive territories under Trianon, including Transylvania to Romania and areas assigned to Czechoslovakia and the Serb-Croat-Slovene state. Neuilly required Bulgarian territorial concessions, including renunciation of Western Thrace to the Allied powers, subsequently assigned to Greece. All three settlements also involved military restrictions and financial obligations; territorial, military and economic effects need separate explanation.
National claims did not produce uniform populations
Czechoslovakia and the Serb-Croat-Slovene kingdom brought together populations with different languages, histories and political aspirations. Enlarged Romania contained communities that did not share the majority’s national identity. German-speaking and Hungarian populations could find themselves outside the states with which they identified. A boundary could satisfy one national movement while making another community a minority, so self-determination was not a simple procedure producing one uncontested result everywhere.
Minority protections attempted to address rights within the new order, but a legal guarantee did not ensure equal treatment or consent. Local administration, schooling, land, political representation and access to remedies shaped experience. Nor was every minority internally united about the best solution. Explain the friction between state-building and inclusion without assuming that people’s identities can be reduced to one census label or that every dispute resulted from the treaties alone.
Economic frontiers created practical challenges
New customs, currencies and administrative boundaries could divide former transport, production and market networks. Small states needed revenue and security while businesses and workers needed access to materials and customers across borders. These problems could encourage protection, dependence or cooperation rather than one inevitable collapse. Assess the settlement through political legitimacy, minority rights, economic adjustment and regional security together, using distinct national and local perspectives rather than describing all successor states as either complete successes or permanent failures.
Sources for this lesson
- Cambridge History 9489 · 2026 Version 3 · content pp. 9–41, assessment pp. 43–45, changes p. 52
- Cambridge History 9489 · December 2025 update · 2026 only
- Alan Sharp · Paris peace conference and consequences · later scholarly overview, 1914–1918 Online
- Trianon, 4 June 1920 · French primary treaty text and editorial introduction, Université de Perpignan
- Neuilly, 27 November 1919 · French primary treaty text, Université de Perpignan
- League Covenant, 1919 · primary treaty text, Versailles Part I, Avalon
Pause and explain
Which comparison correctly identifies the settlements?
Worked example
Why can creating a national state also create a minority problem?
Show the worked solution
- Identify a mixed population.
- Draw the distinction between state sovereignty and individual identity.
- Consider guarantees and their operation.
Answer A state boundary establishes jurisdiction over everyone inside it, not one shared identity. Where communities are mixed, recognition of one national claim can leave others as minorities. Rights on paper then require implementation and remedies rather than being proof of equal treatment.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Guided: Explain why a new frontier could disrupt an existing factory network.
Give me a hint
Trace one economic connection across the border.
Compare my reasoning
- Identify a supplier or market.
- Add customs, currency or transport constraints.
- Explain a possible adjustment rather than inevitable ruin.
A factory might depend on materials or buyers now across a new customs and currency boundary. Extra costs and uncertainty could disrupt production and trade even without destroying the physical railway. Agreements or new markets could reduce these problems, so changed borders created adjustment pressures rather than guaranteeing an identical collapse in every region.
Look for these in your work
- Explains a concrete mechanism
- Retains possible adaptation
Independent: Assess whether new states fully achieved national self-determination.
Give me a hint
Compare sovereignty for a majority with the position of minorities.
Compare my reasoning
- Identify recognition of national claims.
- Explain mixed populations.
- Test protections through implementation evidence.
Recognition of new or enlarged states advanced some national aspirations but left other communities under governments they did not identify with. Minority guarantees acknowledged the problem without automatically solving it. A balanced judgement considers political rights, local experience and available remedies alongside state sovereignty, rather than treating a new flag as complete evidence of consent.
Look for these in your work
- Explains competing claims
- Uses rights and experience as criteria
Application: Improve a fictional map that colours each successor state as one homogeneous people.
Give me a hint
Use the map to raise an enquiry rather than erase differences.
Compare my reasoning
- Identify the state boundaries.
- Add mixed communities and economic connections.
- Distinguish legal protection from lived outcomes.
A stronger map distinguishes jurisdiction from identity and shows that minorities and production networks crossed the new borders. Its explanation can identify protection arrangements while asking how they operated. Homogeneous colours are convenient cartography, not evidence that all inhabitants shared one national preference or enjoyed identical political and economic opportunities.
Look for these in your work
- Distinguishes borders and identity
- Requires local evidence
Common mistakes
- Confusing the defeated states attached to the three treaties
- Describing imperial collapse as beginning only at signature
- Equating a minority guarantee with universal compliance
What can you explain now?
Which comparison correctly identifies the settlements?
Compare with the explanation
Saint-Germain concerned Austria, Trianon Hungary and Neuilly Bulgaria
They addressed different defeated states and cannot be substituted for one another.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Which comparison correctly identifies the settlements?
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.