Learn 200 OCR A Level History A words for source enquiry, interpreting historians and developing sustained thematic essays. Each entry includes a plain-English meaning and a usage example.
OCR History A H505 combines a 90-minute British study worth 25%, a one-hour non-British study worth 15%, a 150-minute thematic and interpretations paper worth 40%, and a 3,000–4,000-word topic essay worth 20%.
200 essay vocabulary words and examples
Source enquiry, synthesis and interpretations
- synthesis — combining evidence or arguments to support an integrated explanation. build a synthesis across more than one part of the period.
- corroboration — independent support for a claim from further evidence. seek corroboration before relying on a disputed figure.
- provenance — the origin and circumstances of a source’s production. use provenance to explain what a source can reveal.
- historical interpretation — a constructed explanation or view of the past. test a historical interpretation using precise contextual knowledge.
- contextualisation — placing evidence in the setting that helps explain it. contextualisation shows why a statement was made at that moment.
- primary evidence — material originating from the time or participants relevant to an enquiry. identify what the primary evidence directly records.
- secondary account — a later analysis or narrative drawing on other evidence. compare how a secondary account selects its examples.
- contemporary witness — someone who lived at the time and observed relevant events. ask what the contemporary witness could actually see.
- retrospective account — a description produced after the events it discusses. consider what later events might affect a retrospective account.
- selection — the process of choosing which evidence to use. assess whether the historian’s selection leaves out significant cases.
- representativeness — how well evidence reflects a wider group or pattern. test representativeness before generalising across a century.
- causal weight — relative importance assigned to a factor in explaining an outcome. judge causal weight using reach and timing.
- contingency — dependence on circumstances that might have been otherwise. identify where a specific decision introduced contingency.
- longitudinal comparison — comparison of the same issue across time. use longitudinal comparison to track the pace of reform.
- periodisation — division of time into periods to explain patterns. test whether the periodisation fits all the regions discussed.
- agency — capacity of people or groups to act within constraints. show how political agency affected the outcome.
- structural constraint — a durable feature of institutions or society that limits choices. explain how a structural constraint shaped the available options.
- counterexample — an example that challenges a proposed general claim. use a counterexample to narrow a claim about a whole period.
- historiography — the study of how history has been written and interpreted. connect historiography to the competing explanations in the enquiry.
- enquiry — a focused investigation framed by a historical question. match every source evaluation to the enquiry.
Historical argument and historical evidence
- interpretation — a reasoned account of the past that selects and explains evidence. compare how each interpretation explains the turning point.
- commentary — reasoning that explains how evidence supports a claim. develop the commentary after a quotation.
- contemporary — belonging to the period being studied. a contemporary account captures what an observer could know at the time.
- retrospective — produced after the events it discusses. retrospective testimony may draw on later knowledge.
- warrant — the reasoning that connects evidence to a claim. explain the warrant for the claim.
- silence — the absence of certain voices or details in a source or archive. the archive’s silence limits conclusions about ordinary workers.
- grounds — the basis or reasons for holding a position. give grounds for a limited trial.
- continuity — persistence of a feature over time. contrast continuity in enforcement with change in formal rights.
- turning point — an event or period that substantially redirects developments. explain what changed after the proposed turning point.
- scope — the range of cases a statement or argument covers. limit the scope of the argument.
- trajectory — the direction or pattern of development over time. trace the trajectory before and after the reform.
- inference — a conclusion reached from available evidence. draw an inference from the pattern.
- structural factor — a durable feature of institutions, society or the economy that shapes outcomes. connect a structural factor to the choices available.
- trigger — an immediate event that sets a process in motion. distinguish a trigger from the longer-term causes.
- deduction — reasoning in which a conclusion follows necessarily from its premises. reach the conclusion by deduction.
- constraint — a circumstance or rule that limits available choices. explain how the financial constraint affected the policy.
- consolidation — the process of strengthening control or making a change more secure. assess whether the law contributed to consolidation of power.
- implementation — putting a decision or rule into effect. compare the policy’s aim with its local implementation.
- enforcement — measures used to secure compliance with a law or decision. look for evidence of enforcement beyond the statute.
- anachronism — placing a concept, practice or object in the wrong historical time. avoid anachronism when explaining what actors understood by the term.
Comparative historical judgement
- generalization — a broad statement drawn from specific cases. a generalization from a narrow sample.
- archive — a collection of records or the place holding them. use an archive to check the date of a decision.
- citizenship — recognized membership in a political community with associated rights and duties. explain how citizenship changed under the Fourteenth Amendment.
- equal protection — the constitutional principle that states must provide equal protection of their laws to persons within their jurisdiction. trace the equal protection argument to the Fourteenth Amendment.
- chronology — the order and timing of events. check the chronology of the proposed causes.
- sequence — the order in which things happen. explain the sequence from decision to outcome.
- disenfranchisement — denial or removal of effective voting rights. identify how a voting rule contributed to disenfranchisement.
- comparability — the extent to which cases can be fairly compared. explain comparability across two regions.
- commensurable — measurable or assessable by a shared standard. choose outcomes that are commensurable.
- regional — relating to a particular region. compare regional conditions.
- case — a specific situation studied to test or illustrate an idea. select a case from the studied theme.
- segregation — enforced or sustained separation of groups in institutions or places. describe where and how segregation operated.
- divergence — movement away from a shared pattern or direction. explain the divergence between the two cases.
- Jim Crow — the system of racial segregation and subordination associated particularly with the U.S. South after Reconstruction. connect a specific voting restriction to Jim Crow.
- rupture — a break with an earlier arrangement. argue that the reform marked a rupture.
- asymmetrical — unequal or unbalanced across sides. an asymmetrical distribution of power.
- multicausal — arising from more than one cause. develop a multicausal explanation.
- structural — arising from established systems or arrangements. a structural constraint on reform.
- sharecropping — farming land in return for giving a share of the crop to the landowner. explain how credit arrangements could constrain sharecropping families.
- reconstruction — the process of rebuilding institutions or practices after disruption. political reconstruction after conflict.
Causation and historical significance
- catalyst — a factor that speeds up an existing process or makes action more likely. the crisis acted as a catalyst for reform.
- precondition — a circumstance that must exist for something else to happen. a precondition for a political alliance.
- precipitate — bring about an event suddenly or sooner than expected. a dispute precipitated the breakdown.
- entrench — make an arrangement or attitude firmly established. entrench an existing division.
- consolidate — strengthen control or combine gains into a more stable position. consolidate political authority.
- mobilise — organise people or resources for action. mobilise supporters ahead of a vote.
- ratification — formal approval of an agreement or decision. the Senate withheld ratification.
- settlement — an agreement or arrangement resolving part of a dispute. a postwar settlement.
- reparations — payments or other compensation for harm, often after war. a dispute about reparations.
- sovereignty — the authority of a state to govern itself. a debate about national sovereignty.
- coalition — a group formed through cooperation among distinct parties. assemble a governing coalition.
- diplomacy — management of relations through negotiation or representation. diplomacy shaped the settlement.
- legitimacy — acceptance that a system or authority is rightful. a challenge to political legitimacy.
- coercion — use of pressure or force to secure compliance. distinguish consent from coercion.
- convict leasing — leasing incarcerated people’s labor to private parties by government authorities. compare convict leasing with the formal end of slavery.
- fragmentation — division into parts that cannot easily act together. political fragmentation weakened the coalition.
- Great Migration — the large-scale movement of African Americans from the U.S. South to other regions in the twentieth century. connect a source about northern jobs to the Great Migration.
- counterfactual — a reasoned consideration of what might have happened under different conditions. test a factor with a cautious counterfactual.
- intermediate — coming between earlier reasons and the main result. identify an intermediate conclusion.
- durability — the ability of an effect or institution to last. judge the durability of the settlement.
Global connections and historical processes
- contextualization — placing a development within a relevant broader historical situation. contextualization links the trade route to empire.
- unstated — implied without being expressed directly. an unstated assumption about access.
- transformation — a major change in the structure or character of something. the transformation of long-distance trade.
- interregional — connecting or involving different regions. interregional exchange across the Pacific.
- brokerage — work that connects parties and helps exchanges happen. commercial brokerage between ports.
- diaspora — a population dispersed from a place of origin. a merchant diaspora maintaining trade links.
- commodity — a good traded for value. silver circulated as a valuable commodity.
- circulation — movement of people, goods or ideas through a system. circulation of manufactured goods.
- extraction — removal of resources or value from a place or group. colonial extraction of mineral wealth.
- tributary — relating to payments or obligations owed to a stronger power. a tributary relationship between states.
- mercantilism — policies seeking to strengthen state power through managed trade and wealth. mercantilism shaped imperial restrictions.
- commercialization — expansion of activity directed towards markets or sale. commercialization changed patterns of production.
- monopoly — exclusive or dominant control of a trade or resource. a state-backed trading monopoly.
- maritime — relating to the sea or sea travel. maritime trade linked distant ports.
- syncretism — blending of elements from different traditions. religious syncretism in a contact zone.
- imperial — relating to an empire or the extension of its rule. imperial control of a trade route.
- labour — work or the workers who do it. coerced labour supported extraction.
- integration — bringing separate parts into a connected system. commercial integration across regions.
- asymmetry — an imbalance between parties in power, scale or opportunity. asymmetry in trading relationships.
- period — a defined span of time relevant to the question. keep the argument within the specified period.
Taking a position
- claim — a statement you want the reader to accept. make a claim.
- stance — your position on a question. take a clear stance.
- thesis — the central position or interpretation your response develops. support the thesis.
- premise — an idea the argument starts from. question the premise.
- assumption — something treated as true without being established. test the assumption.
- assert — state a position firmly. assert that access matters.
- argue — give reasons in support of a position. argue for a trial.
- maintain — continue to hold or defend a view. maintain that the policy is fair.
- contend — put forward a position that can be challenged. contend that the proposal is workable.
- justify — give sufficient reasons for a decision or judgement. justify the expense.
- advocate — publicly support an action or change. advocate for reform.
- defend — answer criticism of a view or choice. defend a decision.
- qualify — limit a statement so it applies only where warranted. qualify the conclusion.
- concede — acknowledge a valid point made by the other side. concede that costs may rise.
- rebut — answer an opposing claim with reasoning or evidence. rebut the objection.
- counterargument — a reasoned objection to a position. address a counterargument.
- reservation — a concern that makes agreement incomplete. express a reservation.
- distinguish — show what makes two things different. distinguish cost from value.
- criteria — standards used to judge something. agree on the criteria.
- verdict — a final judgement reached after consideration. reach a verdict.
Using evidence and reasoning
- evidence — information that helps establish a claim. draw on evidence.
- example — a specific case that makes a general point clearer. give a concrete example.
- illustrate — make an idea clearer through a case or detail. illustrate the difficulty.
- demonstrate — show how or why something is true. demonstrate a connection.
- substantiate — support a claim with convincing information. substantiate the allegation.
- corroborate — provide independent support for an existing account. corroborate the witness’s account.
- infer — draw a conclusion from available clues. infer a motive from the wording.
- imply — suggest a meaning without saying it directly. imply that change is possible.
- interpret — explain what something means in context. interpret a figure in context.
- analyse — examine how parts work together. analyse the writer’s choices.
- evaluate — judge the strength, quality or value of something. evaluate the proposal.
- plausible — reasonable enough to believe given what is known. a plausible explanation.
- credible — worthy of belief or trust. a credible source.
- relevant — directly connected to the issue being considered. relevant to the question.
- sufficient — enough for the purpose or conclusion at hand. sufficient for a limited trial.
- representative — typical enough to reflect a larger group. a representative sample.
- anecdote — a brief account of a particular incident. open with an anecdote.
- limitation — something that restricts what a method or claim can establish. acknowledge a limitation.
- contradict — state or show something incompatible with another claim. contradict the earlier finding.
- synthesise — combine ideas from separate sources into a new account. synthesise competing accounts.
Explaining cause and effect
- cause — produce or bring about an outcome. cause avoidable delays.
- contribute — play a part in bringing about an outcome. contribute to overcrowding.
- redlining — discriminatory restriction of credit or services in areas marked as risky, often on racial grounds. explain how redlining affected access to mortgages.
- accelerate — make a process happen faster. accelerate the transition.
- intensify — make something stronger or more severe. intensify competition.
- exacerbate — make an existing problem worse. exacerbate existing inequalities.
- mitigate — reduce the severity or harmful effect of something. mitigate the harm.
- prevent — stop something from happening. prevent further damage.
- deter — discourage someone from taking an action. deter people from taking risks.
- enable — make an action possible. enable students to attend.
- facilitate — make an action or process easier. facilitate access to training.
- reinforce — strengthen an effect, belief or behaviour. reinforce an existing pattern.
- undermine — weaken something, often gradually. undermine public trust.
- sustain — keep something going over time. sustain the improvement.
- displace — push something or someone out of an existing place or role. displace smaller operators.
- redistribute — change how something is shared. redistribute public funds.
- consequence — an outcome that follows an action or event. an unintended consequence.
- mechanism — the process through which an effect occurs. identify the mechanism.
- correlation — a pattern in which two things vary together. observe a correlation.
- premiss — a proposition offered as a reason for a conclusion. test whether the premiss is true.
Synthesising sources
- attribute — identify where an idea or quotation comes from. attribute the statistic to Source A.
- cite — identify the source of material used in an argument. cite the survey in Source B.
- paraphrase — restate a source’s meaning in your own words and structure. paraphrase the author’s reasoning.
- excerpt — a passage taken from a longer work. an excerpt from a public address.
- jointly — together rather than separately. the two reasons jointly support the claim.
- testimony — a person’s account offered as evidence. testimony from residents.
- dataset — an organised collection of data. a dataset on bus ridership.
- sample — a subset examined to learn about a larger group. a sample of city schools.
- metric — a defined quantity used to measure performance or change. an attendance metric.
- variable — a factor that may vary or be deliberately changed. control for a confounding variable.
- baseline — a reference point used to judge later differences. measure change against the baseline.
- methodology — the overall system of methods used to investigate a question. question the study’s methodology.
- outlier — a result far from the others in a set. identify an outlier.
- independent — arising separately from the source or factor under discussion. an independent source.
- convergence — movement towards agreement or a shared conclusion. convergence between findings.
- deductive — involving an inference intended to follow necessarily. a deductive argument with a missing premiss.
- complement — add a missing part or strength to something else. complement the survey with testimony.
- complicate — show that a simple explanation leaves important things out. complicate the initial conclusion.
- reconcile — explain how apparently conflicting claims can fit together. reconcile the two findings.
- triangulate — check a claim by comparing different independent sources or methods. triangulate claims across three sources.
Evaluating limits and assumptions
- presuppose — treat something as already true before arguing. presuppose that demand is fixed.
- conflate — treat distinct things as if they were the same. conflate availability with accessibility.
- elide — leave out or pass over a distinction or detail. elide the difference between choice and constraint.
- overgeneralise — draw a conclusion that covers more cases than the evidence allows. overgeneralise from one institution.
- extrapolate — extend an observed pattern beyond the data available. extrapolate from a small pilot.
- circumscribe — limit something to a defined range. circumscribe the policy’s application.
- predicate — base a claim or decision on a condition. predicate success on continued funding.
- reductive — simplifying a subject in a way that loses important detail. a reductive account of motivation.
- tenable — capable of being maintained under criticism. a tenable explanation of the discrepancy.
- fallacious — based on faulty reasoning. a fallacious comparison between unlike cases.
- ambivalent — having mixed or opposing feelings about something. an ambivalent response to regulation.
- normative — concerned with what ought to be done or valued. a normative claim about fairness.
- empirical — based on observation or evidence from experience. empirical evidence on take-up.
- inductive — involving reasoning that extends beyond the observed cases. an inductive inference from a survey.
- contention — a claim presented as part of an argument. the contention that access is universal.
- caveat — a warning or limitation attached to a statement. accept the proposal with a caveat.
- paradox — an apparently contradictory situation or statement. the paradox of choice without access.
- compatibility — ability to work or coexist together. compatibility with local practice.
- salience — importance or prominence in a particular context. the salience of cost in the debate.
- commensurate — matching another thing in size or degree. support commensurate with need.
Exam requirements and worked examples
Know the question types in H505
The 50-mark British paper includes a compulsory 30-mark enquiry using four primary sources to test a hypothesis and a 20-mark period essay chosen from two. The 30-mark non-British paper asks for one of two paired questions. Its first part compares the importance of two factors for 10 marks, and its second is a 20-mark essay on a different part of the period.
The 80-mark thematic paper combines interpretation work linked to a depth study with thematic essays. Its taught theme covers at least 100 years. Prepare to use precise depth knowledge for the interpretation task and develop comparisons across the period for the thematic tasks. The 40-mark Y100 topic essay is non-exam assessment. Work from OCR’s title and assessment guidance and your centre’s instructions.
The thematic paper gives two historians’ extracts for a compulsory 30-mark interpretation question. Its themes section asks for two essays from a choice of three, worth 50 marks in total. The thematic essays cover the whole period studied, so practise selecting examples that let you compare patterns across time.
Official specifications and sources
- Cambridge OCR History A H505 specification
- OCR History A assessment overview
- OCR sample papers and assessment resources
Worked reasoning about the weight of two factors
Imagine comparing the role of political organisation and economic pressure in a reform movement. Define the outcome first. Winning a vote, sustaining a campaign and shaping the content of a reform are different outcomes. Evidence about campaigning may show why an issue stayed visible. Evidence about economic pressure may help explain why decision-makers acted at a particular time.
Use the same criterion for both factors. If the criterion is explaining the timing of a decision, ask what changed shortly before it and why that mattered. If the criterion is explaining why the reform had the form it did, compare the demands advanced by organisers with the incentives of decision-makers. Develop the comparison with evidence from your unit.
A strong judgement can explain that the factors interact. Economic pressure might create an opportunity, while political organisation determines who can use it. Show what each factor adds to the explanation. Give the reader a reason to assign greater weight to one where the wording asks you to choose.
Fencing Method for source enquiry
Start with The source is useful. Add detail. The letter records an organiser’s request for funding before the vote. Refine the tone. It gives direct evidence of the organiser’s stated priority at that point. Add logic. Because the letter sought support, the stated need may reflect what the recipient could be persuaded to fund. Transfer the test to a speech and explain how audience affects the inference.
Apply the sequence to corroboration. State what two sources agree about and whether they rely on separate information. Agreement between two accounts based on the same report may add little independent support. Agreement between records produced in different settings can strengthen a claim if they measure the same thing.
Evaluate interpretations in historical context
Identify the explanation the historian advances. Write its mechanism and scope. Then test an implication against precise knowledge. If the interpretation attributes change to a new institution, ask whether change began earlier or occurred where that institution had little influence. Use the test to judge how far the view accounts for what happened.
Compare two interpretations around a common problem. One might explain timing while the other explains geographic reach. If they address different outcomes, clarify the difference before judging which is more convincing for the exact question. A strong comparison makes the evidence and criterion visible.
Build a thematic essay across the whole period
Plan by themes or criteria and place examples from different parts of the period within each paragraph. To test continuity, use evidence about what persisted while other features changed. To establish a turning point, show a shift in pace, direction or scope. Compare the period before and after it.
When revising, highlight where the argument moves between dates. If the draft discusses three periods in isolation, connect them by returning to the same criterion. For instance, compare how state action affected access early, midway and late in the period. Then weigh which factor most consistently explains the pattern.
Practise a focused coursework enquiry
Use a practice question that names an issue, time frame and basis for evaluation. Write a small source plan that includes the evidence you would seek and the role it could play. Record a competing interpretation and one observation that might change your judgement. Follow your centre’s guidance for the live assessed work.
When drafting practice, keep notes that distinguish what a source says, your interpretation and a question still unresolved. This makes it easier to cite accurately and revise a claim if the evidence turns out to be narrower than expected.
Frequently asked questions
Can the non-British comparison be planned like a long thematic essay? Match its 10-mark task and focus tightly on relative importance. Should a thematic answer cover a single decade? Use evidence across the question’s range. Can a primary source be evaluated positively despite a clear purpose? Yes. Explain which historical question it can help answer.
Compare the evidence for a short and a long claim
Write one claim about the timing of a decision and one about the long-term direction of policy. Choose evidence for each. The minutes of a meeting could help explain why a decision was made at that moment. A sequence of decisions and outcomes would give a better basis for judging a long-term pattern. Test which evidence matches the scale of the claim.
Now choose one observation that could challenge each claim. An earlier decision might weaken the case for a turning point. Evidence about a different institution might show that an apparent trend applied only in one setting. Put the challenge into the paragraph and decide whether it changes the verdict or limits its scope. This is a practical way to make a thematic answer evaluative throughout.
Turn provenance into a reason for your judgement
Read an account and underline its most relevant claim. Identify its producer and intended audience if known. Ask what that audience would have expected to hear and what the producer could reasonably have known. Then decide whether those circumstances make the claim more or less valuable for the enquiry. If the source was meant to defend a policy, it might be especially useful for studying public justification.
Compare with a source produced for another purpose. State whether it is corroborating the same claim or addressing a different aspect. A private record can add a perspective, but it still has its own context. Explain how the two sources work together before drawing your judgement.