25 IB History IA Topic Ideas

What Is the IB History Internal Assessment?

The IB History Internal Assessment (IA) is a historical investigation that accounts for 25 percent of your final History grade at both Standard Level and Higher Level. Unlike your exams, the IA gives you the freedom to choose any historical topic that interests you, provided it falls within the scope of the subject and is not the same topic you study for your extended essay. For more on this, see our guide on aP us history DBQ strategy guide. (This guide has been for 2025-26 submissions.)

The investigation requires you to formulate a focused research question, analyse a range of primary and secondary sources, and write a structured report of up to 2,200 words. Your work is internally assessed by your teacher against specific criteria and then externally moderated by the IB. The IA is your opportunity to work like a real historian, engaging with sources, weighing evidence, and constructing an argument based on your own research rather than simply answering examination questions designed by others. You may also find our resource on write a history IA that scores a helpful.

Unsure whether your research question is sufficiently focused or struggling to find quality sources for your topic? An experienced IB History tutor can help you refine your question, identify the best sources for your investigation, and strengthen your source analysis and argument. Get matched with an IB History tutor →

This assessment structure reflects the discipline of history itself: historians do not simply memorise facts but rather investigate questions, interrogate sources for bias and reliability, and develop interpretations supported by evidence. Your IA demonstrates your ability to engage in this authentic historical work.

Understanding the Assessment Criteria

The History IA is marked out of 25 across three sections, each with distinct requirements and mark allocations. Understanding precisely what each section requires allows you to allocate your effort strategically and avoid common pitfalls.

Section 1: Identification and Evaluation of Sources (6 marks)

In this section you identify and evaluate two sources that are relevant to your investigation. For each source, you must explain its origin (when, where, by whom, and under what circumstances it was created), purpose (what was the creator trying to achieve?), value (what does it tell us about your research question?), and limitations (what does it not tell us, and why might it be biased or incomplete?) in relation to your specific research question.

Examiners reward responses that go beyond generic evaluation to show how a source's particular characteristics affect its usefulness for your investigation. Rather than stating "this source is useful because it is a primary source," explain precisely what information the source provides and what biases or limitations it carries that affect its reliability for answering your particular question.

Section 2: Investigation (15 marks)

This is the core of your IA and carries the most weight. You must present a clear, well-structured argument that directly addresses your research question. Use evidence from a range of sources, analyse different perspectives, and develop a coherent line of reasoning. The best investigations demonstrate critical thinking by weighing evidence rather than simply describing events.

Avoid the common mistake of producing a narrative account of "what happened." Instead, explicitly address your research question throughout your investigation, using evidence to support or complicate your analysis. Each paragraph should advance your argument rather than simply adding more information.

Section 3: Reflection (4 marks)

The reflection requires you to consider the methods and challenges you encountered during your investigation. This is not a summary of your findings but rather a discussion of what you learned about the methods historians use, the difficulties of working with sources, and how the investigation shaped your understanding of history as a discipline. Discuss questions such as: How did working with primary sources differ from studying history through textbooks? What did you discover about the reliability of sources? How did engaging with multiple perspectives change your understanding of the historical event? Explore our detailed guide on revise history like top students for more tips.

How to Choose a Strong IA Topic

Choosing the right topic is arguably the most important step in the entire process. A well-chosen topic makes research manageable, source evaluation meaningful, and argument construction straightforward. A poorly chosen topic creates difficulties at every stage.

The strongest topics share several characteristics. They are narrow enough to be thoroughly investigated within 2,200 words—"the causes of World War One" is too broad, but "the impact of the Schlieffen Plan on German strategic thinking in 1914" is appropriately focused. They relate to a genuine historical debate or question where multiple perspectives exist, rather than asking about undisputed facts. They have sufficient accessible source material including both primary and secondary sources, meaning you can access the evidence necessary to construct your argument. Avoid topics that are too recent (events within the last 10 years), as there may be insufficient historical analysis available, or too obscure to find quality sources.

Many students struggle to narrow their topic sufficiently and end up researching something too broad to analyse thoroughly. A History tutor can help you test whether your question is appropriately focused, ensure it's genuinely debatable, and confirm that sources exist before you invest weeks in research. For insight into analytical techniques that strengthen IA work, explore our case study analysis which shows how to develop compelling arguments from evidence. Find a History IA specialist →

Always discuss your proposed topic with your teacher before committing to it. They can help you assess whether the scope is appropriate and whether sufficient sources are available. A good teacher will also alert you to overly-studied topics where you might simply be repeating existing historiography, rather than engaging in original analysis.

25 IB History IA Topic Ideas

Conflict, War and Diplomacy

1. To what extent was the Treaty of Versailles responsible for the rise of the Nazi Party in Germany by 1933? This topic allows you to evaluate competing interpretations of interwar German politics using both primary documents and historical scholarship. You can examine Nazi propaganda about the "stab-in-the-back myth" alongside economic data and election results.

2. How significant was the role of new military technology in changing the nature of warfare on the Western Front between 1914 and 1918? You can examine tanks, chemical weapons, or aviation and assess their tactical impact using military records and soldier testimonies. Focus on a specific technology rather than attempting to cover all innovations.

3. To what extent did the Cuban Missile Crisis of 1962 bring the world closer to nuclear war than the Able Archer exercise of 1983? This comparative topic lets you evaluate two Cold War flashpoints using declassified documents and diplomatic records. Both events generated extensive primary source material now available to researchers.

4. How effective was the policy of appeasement in preventing the outbreak of war in Europe between 1936 and 1939? A classic historiographical debate with rich primary and secondary source material available. You can examine speeches, cabinet papers, and diplomatic correspondence from this period.

5. To what extent was the atomic bombing of Hiroshima militarily necessary for ending the Pacific War in 1945? This topic engages with an ongoing historical debate and offers access to both American and Japanese perspectives. Consider examining military assessments of invasion casualties, Japanese surrender discussions, and the diplomatic context of Soviet entry into the war.

Authoritarian States and Political Movements

6. How did Nazi propaganda target women to support the regime's demographic policies between 1933 and 1939? Propaganda posters, speeches, and legislation provide rich primary source material for this focused investigation. You can analyse how the regime's messaging about motherhood and family shaped women's experiences.

7. To what extent did the Castro regime maintain power in Cuba through coercion rather than popular support between 1959 and 1970? This topic allows you to analyse the mechanisms of authoritarian rule using political speeches, policy documents, and exile testimonies. Consider examining literacy programmes and land reform alongside repressive measures.

8. How significant was the role of censorship in maintaining Stalin's control over the Soviet Union during the Great Purges of 1936 to 1938? This focused topic examines the intersection of media control and political repression. You can analyse official press reports against exile accounts and archival documents to reveal how information control supported the purges.

Rights, Protest and Civil Liberties

9. To what extent did the Montgomery Bus Boycott of 1955-1956 represent a turning point in the American Civil Rights Movement? This well-documented event offers abundant primary sources including newspaper reports, court records, and personal accounts. You can evaluate whether this specific action fundamentally changed the trajectory of the movement or represented continuity with earlier protest strategies.

10. How effective were the methods of the suffragette movement in achieving women's voting rights in Britain by 1918? You can evaluate militant versus constitutional tactics using parliamentary records and movement publications. Consider the impact of World War One on the suffrage debate and the role of different feminist groups.

11. To what extent did the Stonewall Riots of 1969 mark the beginning of the modern LGBTQ rights movement in the United States? This topic allows you to examine the relationship between a specific event and broader social change. You can assess whether earlier activism and legal changes were equally significant in establishing the modern movement.

12. How successful was the anti-apartheid movement in South Africa in achieving its goals through international economic pressure between 1960 and 1990? Investigating the role of sanctions and divestment provides a focused angle on this broader topic. You can examine whether international pressure or internal resistance was more decisive in ending apartheid.

Society, Culture and Identity

13. To what extent did the Black Death of 1347-1351 transform the social structure of medieval England? This topic connects disease history to social and economic change using contemporary chronicles and economic records. You can investigate whether the plague fundamentally altered class relations or accelerated existing trends.

14. How did the experience of refugees differ between the partition of India in 1947 and the creation of Bangladesh in 1971? A comparative investigation using oral histories, government documents, and photographic evidence. You can analyse whether religious, ethnic, or political factors most influenced refugee experiences in each case.

15. To what extent did the 1918 influenza pandemic influence public health policy in the United States in the decade following the outbreak? Connecting historical pandemics to policy changes offers both primary documents and modern historical analysis. You can examine quarantine measures, public health messaging, and the development of epidemiological research.

Revolutions and Independence Movements

16. To what extent were economic grievances more significant than ideological factors in causing the French Revolution of 1789? This classic topic offers extensive historiography and primary source material. You can examine cahiers de doléances (statements of grievances), financial records, and revolutionary speeches to assess competing interpretations.

17. How significant was the role of Enlightenment ideas in shaping the American Declaration of Independence of 1776? You can trace intellectual influences through correspondence, published works, and the document itself. Analyse the language and arguments Thomas Jefferson employed and evaluate how his reading of Enlightenment philosophers shaped the declaration.

18. To what extent did Mahatma Gandhi's methods of nonviolent resistance contribute to Indian independence in 1947? This topic allows you to evaluate the effectiveness of specific political strategies. Consider examining contemporary assessments by British officials, Indian nationalists, and international observers about what factors were most significant in British withdrawal from India.

Global Interactions and Imperialism

19. How did British colonial education policies affect indigenous cultural identity in Kenya between 1920 and 1960? This topic examines the cultural impact of imperialism using colonial records and post-independence accounts. You can analyse curriculum materials, school attendance records, and oral histories from individuals educated under colonial rule.

20. To what extent was the Scramble for Africa driven by economic motives rather than strategic or ideological factors? You can focus on a specific region or country to keep the investigation manageable whilst engaging with broader debates about imperialism. Compare European rivalries, economic interests, and ideological justifications for colonisation.

Science, Technology and the Environment

21. How did the introduction of railways transform the economic development of a specific region during the nineteenth century? Choosing a particular country or region keeps this manageable whilst engaging with modernisation debates. You can examine trade statistics, business records, and contemporary accounts of how rail networks changed commerce and society.

22. To what extent did the development of nuclear weapons change the nature of international diplomacy during the Cold War period of 1945 to 1962? This focused timeframe allows detailed analysis of early nuclear diplomacy. You can examine how nuclear capability influenced negotiations, alliance-building, and crisis management.

Sport, Propaganda and Society

23. To what extent were the 1936 Berlin Olympics successful as a propaganda tool for the Nazi regime? This topic offers rich visual and documentary sources alongside well-developed historical scholarship. You can analyse Nazi propaganda about the games, international press coverage, and long-term impact on public opinion.

24. How did the use of sport as a diplomatic tool during the Cold War compare between the United States and the Soviet Union in the 1970s and 1980s? The boycotts of 1980 and 1984 provide focused case studies. You can examine government documents, athlete testimonies, and media coverage to assess how both superpowers weaponised sporting events.

Climate and Environment in History

25. To what extent did industrial pollution in nineteenth-century Britain contribute to the development of early environmental legislation? This topic connects environmental history to political and social change using parliamentary records and public health reports. You can investigate whether pollution or public health concerns were the primary drivers of legislation.

Tips for Writing a High-Scoring History IA

Beyond choosing a strong topic, several strategies will help you maximise your marks across all three sections. The highest-scoring IAs demonstrate historical thinking, not just historical knowledge.

Formulate your research question as a "to what extent" or "how significant" question rather than a simple "what happened" question. This structure naturally invites the kind of analytical, evaluative response that examiners reward in Section 2. "What caused World War One?" is too broad; "To what extent were economic rivalries more significant than nationalist tensions in causing World War One?" is appropriately focused and analytical.

For Section 1, choose two sources that are genuinely different in nature, such as a primary source and a secondary source, or two sources from opposing perspectives. Evaluate them specifically in relation to your research question rather than offering generic comments about source types. Rather than stating "this is a useful primary source," explain precisely what it tells us about your question and what limitations it has.

In Section 2, structure your argument thematically rather than chronologically where possible. Each paragraph should advance your argument by presenting evidence, analysing it, and connecting it to your research question. Use historiographical references to show awareness of how historians have debated your topic, but make sure your own analysis drives the investigation—do not simply summarise what other historians have concluded. For additional guidance on structuring compelling historical arguments, see our history essay templates. Learn more in our guide on write a history essay.

For Section 3, reflect honestly on the challenges you faced and what they taught you about historical methodology. Discuss issues such as the difficulty of establishing causation, the problem of bias in sources, or the limitations of working within a restricted word count. Explain how engaging with primary sources deepened or changed your understanding compared to studying history through textbooks alone.

Developing Your Historiographical Awareness

The strongest IAs demonstrate awareness of how historians debate their topics. Rather than presenting a single narrative, they acknowledge that reasonable historians disagree about interpretation and show how your evidence supports one perspective over others. This historiographical thinking is what examiners are looking for when they assess the Investigation section.

As you research, note not just what happened but how historians have interpreted it. When you encounter conflicting interpretations, rather than trying to decide which is "correct," ask what evidence each historian emphasises and what assumptions shape their conclusions. This critical engagement with historiography strengthens your own analysis.

Get Expert Support for Your History IA

Our History tutors specialize in helping students develop strong, focused research questions; identify and evaluate the most relevant primary and secondary sources; structure compelling arguments; and craft reflections that demonstrate genuine historical thinking. Whether you need help narrowing your topic, strengthening your source analysis, developing historiographical awareness, or refining your investigation argument, we'll match you with a tutor who can help you achieve top marks. Find your History IA tutor →

Frequently Asked Questions

How long should the History IA be?

The History IA has a maximum word count of 2,200 words. This includes Sections 1, 2, and 3 but excludes the bibliography, source citations, and any appendices. Staying close to the maximum is advisable to ensure you develop your argument fully, but exceeding it may result in the examiner not reading the excess content. Plan your word allocation strategically: typically Section 1 should use approximately 300-400 words, Section 2 approximately 1,500-1,700 words, and Section 3 approximately 200-300 words.

Can I write about a topic from any time period?

Yes, you can investigate any historical topic provided it is not within the last 10 years and it is not the same topic as your extended essay. The topic does not need to relate to the syllabus topics studied in class, giving you genuine freedom to pursue your interests. However, choosing a topic that connects to class learning often makes research easier because you already have background knowledge.

How many sources do I need for the History IA?

You must evaluate two sources in detail in Section 1, but your overall investigation should draw on a wider range of sources. A strong IA typically uses between 7 and 15 sources, including a mix of primary and secondary materials. Quality and variety matter more than sheer quantity—it is better to analyse five sources deeply than to cite fifteen sources superficially.

What makes a good research question for the History IA?

A good research question is specific, debatable, and researchable within the word limit. It should invite analysis and evaluation rather than simple description. Questions beginning with "To what extent" or "How significant" naturally encourage the kind of balanced, analytical response examiners reward. Your question should be narrow enough to investigate thoroughly within 2,200 words but broad enough to allow engagement with multiple sources and perspectives.

Can two students in the same class choose the same topic?

Whilst technically possible, it is generally discouraged because your teacher must be confident that each student's work is entirely independent. If you and a classmate share similar interests, consider investigating different aspects of the same broader topic or focusing on different time periods or regions. For example, if you both care about revolution, one student might investigate the French Revolution whilst another investigates the Russian Revolution.

Do I need to include primary sources in my History IA?

Using primary sources significantly strengthens your investigation. For Section 1, including at least one primary source demonstrates your ability to work directly with historical evidence. In Section 2, combining primary evidence with secondary analysis shows the kind of multi-layered engagement with sources that earns top marks. However, the IA can be completed using only secondary sources if primary source material is difficult to access—discuss this with your teacher if you have concerns about source availability.