Boom, crash and Depression: what needs explaining?
Separate output, share prices and household security before building a causal explanation.
Exam scope and assessment notes
Sixteen original lessons and 48 explained guided, independent and transfer tasks introduce the listed causes in enquiry 6.1 for 2027–2029. Compare Republican policy, the boom and unequal wealth, urban/rural differences, speculation and valuation, confidence, war and international trade, banking and the Federal Reserve, agriculture, old and new industries, production and oversupply. This is introductory teaching, not full AS or A Level preparation. Twenty-six further lessons and 78 explained tasks introduce enquiry 6.2: financial losses and bankruptcy, regulation demands, unemployment and hours, agriculture and deflation, welfare, family and minority experiences, Hoover’s agricultural, housing, RFC and relief responses, Bonus Marchers, and the 1932 election and developing coalition. Fifteen further lessons and 45 explained tasks begin enquiry 6.3 through the March crisis, advisers and Congress, holiday and emergency banking legislation, selective reopening, an original source-comparison workshop, conservation work, FERA, agricultural adjustment, industrial codes, public works, TVA and securities disclosure. Eighteen further lessons and 54 explained tasks deepen enquiry 6.3 through original banking-separation and temporary-insurance conditions, securities registration and non-approval, the 1934 market framework, distinct HOLC routes and later operational evidence, farm credit, November CWA recruitment and February 1934 reductions, a local tenant case, labour conditions and an original programme-source comparison. Ten further lessons and 30 explained tasks introduce Supreme Court disputes: Schechter’s delegation and commerce grounds, Butler’s majority and Stone’s dissent, the February 1937 draft’s conditions and ceilings, its failure, Gannett’s press argument, Sumners’s Southern Democratic opposition, the Jones & Laughlin industrial case and existing-seat appointments through 1941. A selected administration/publisher comparison uses original paraphrases, not a full authentic source set. Nine further lessons and 27 explained tasks introduce critics from the Left and Right through Thomas, the June 1936 Communist platform, Townsend’s changing pension plans, Long’s dated redistribution appeal, Coughlin’s monetary proposals and antisemitic propaganda, Republican alternatives and Smith’s Liberty League intervention. A selected Smith/Thomas comparison and a dated official election-table exercise distinguish shared opposition, different institutions, audience, votes and influence. These are original introductory case studies, not complete political histories. Enquiry 6.3 remains partial: wider programme implementation and local, racial and gender access and outcomes, deeper organisational and regional histories of opposition, earlier and later political tactics, further Supreme Court rulings and fuller political and legal depth still need teaching and practice. Ten further lessons and 30 explained tasks begin enquiry 6.4 through the January 1935 security initiative, selected original Social Security assistance, benefit and tax provisions, Wagner Act rights and Board procedures, and WPA creation and work rules. A selected proposal/statute comparison uses original paraphrases, not a full authentic source set. Ten further lessons and 30 explained tasks introduce the 1936 election through the electoral result and its denominator, party claims and pledges, Roosevelt’s Philadelphia economic-freedom argument, the September farm–city broadcast, labour mobilisation, Black political agency and Southern resistance, Farley’s organisation, the July postmaster procedures and June relief anti-coercion provisions. A selected Roosevelt/Republican comparison distinguishes shared concern with insecurity from different institutions. Fourteen further lessons and 42 explained tasks introduce selected 1935–1937 mechanisms: the June tax proposals and enacted individual and corporate schedules; NYA creation and student-aid limits; original rural power loans and allocations; conservation plans, payments and tenant safeguards; farm-acquisition and rehabilitation finance; and original low-rent housing access and finance. A selected tax-proposal/electrification-statute comparison distinguishes instruments and evidence of outcomes. Sixteen further lessons and 48 explained tasks introduce the 1937–1938 recession through industrial measures, fiscal cash flows, payroll collection, reserve requirements and bank responses, Treasury gold finance, inventories and prices, employment and hours, uneven business and household effects, the April recovery proposals, June work-relief and public-works authority, and an upturn with continuing weaknesses. A selected Roosevelt/Eccles comparison preserves the latter’s expressly personal standpoint. All three listed recession strands now have introductory teaching; full historical and assessment coverage remains unfinished. Ten further lessons and 30 explained tasks introduce the original 1938 Fair Labor Standards Act and its 1941 Darby validation: commercial coverage, phased wages and overtime, distinct exemptions, child-labour conditions, special certificates, enforcement and stronger applicable state standards. A selected statute/Court comparison distinguishes purpose, constitutional validity and measured outcomes. This is a selected labour-standards introduction, not complete beneficiary, exclusion or government-change coverage. Eleven further lessons and 33 explained tasks introduce family security under the original 1939 Social Security amendments: earlier monthly operation, worker qualification, wives, widows, children and parents, continuing employment exclusions, distinct state assistance, claims and hearings, pooled finance, actual January–June 1940 payment records and startup limits. A selected law/trustees comparison distinguishes legal rights, recorded delivery and unproven household adequacy. This is a selected family-security introduction, not complete beneficiary, exclusion, administrative or economic-recovery coverage. Enquiry 6.4 remains partial: fuller revenue and programme histories, political motives, deeper regional election and coalition histories, reception and causal evidence, fuller patronage and civil-service practice, programme implementation and unequal access and outcomes, deeper fiscal and bank series, industrial and household experiences, and government, recovery and experiences through 1941 still need further teaching and practice. The 1937 proposal is later follow-through within 6.3, not an event of the First 100 Days. Historical depth, wider authentic reading, subject-specialist review, complete source sets, full papers and calibrated marking remain unfinished. Selected source cards are labelled original paraphrases, not quotations or complete authentic documents. Existing 2026 lessons receive no automatic revised-year credit. The Great Crash, the Great Depression and the New Deal, 1920–1941 is an American Paper 2 topic in 2027 and 2029, and the American Paper 1 topic in 2028. Paper 1 Historical sources is 75 minutes and 40 marks: answer both parts of one question using four sources totalling at most 600 words, with at least three written sources and up to one visual. Part (a) compares two sources for 15 marks; part (b) uses all four sources and contextual knowledge for a 25-mark judgement. Paper 2 Outline study is 105 minutes and 60 marks: answer two questions from one section and both parts of each, with a 10-mark causal explanation and a 20-mark argument. These lessons are introductory practice, not a complete assessment programme.
Before you begin
- Distinguish share prices, output, income, net wealth and purchasing power
- Keep fiscal and monetary policy, liquidity and solvency, contemporary claims and retrospective interpretations separate
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
How should you explain the Crash and the Depression?
What you will learn
- In the invented factory, what happens to revenue and output?
- Why can October share prices not explain every earlier economic weakness?
- How would you improve “the crash and Depression were exactly the same event”?
Develop an AS causal argument
- Write your own response before opening the model.
- Define the outcome, explain dated mechanisms and weigh alternatives. Label invented arithmetic and distinguish source claims from measured results.
Sixteen original lessons and 48 explained guided, independent and transfer tasks introduce the listed causes in enquiry 6.1 for 2027–2029. Compare Republican policy, the boom and unequal wealth, urban/rural differences, speculation and valuation, confidence, war and international trade, banking and the Federal Reserve, agriculture, old and new industries, production and oversupply. This is introductory teaching, not full AS or A Level preparation. Twenty-six further lessons and 78 explained tasks introduce enquiry 6.2: financial losses and bankruptcy, regulation demands, unemployment and hours, agriculture and deflation, welfare, family and minority experiences, Hoover’s agricultural, housing, RFC and relief responses, Bonus Marchers, and the 1932 election and developing coalition. Fifteen further lessons and 45 explained tasks begin enquiry 6.3 through the March crisis, advisers and Congress, holiday and emergency banking legislation, selective reopening, an original source-comparison workshop, conservation work, FERA, agricultural adjustment, industrial codes, public works, TVA and securities disclosure. Eighteen further lessons and 54 explained tasks deepen enquiry 6.3 through original banking-separation and temporary-insurance conditions, securities registration and non-approval, the 1934 market framework, distinct HOLC routes and later operational evidence, farm credit, November CWA recruitment and February 1934 reductions, a local tenant case, labour conditions and an original programme-source comparison. Ten further lessons and 30 explained tasks introduce Supreme Court disputes: Schechter’s delegation and commerce grounds, Butler’s majority and Stone’s dissent, the February 1937 draft’s conditions and ceilings, its failure, Gannett’s press argument, Sumners’s Southern Democratic opposition, the Jones & Laughlin industrial case and existing-seat appointments through 1941. A selected administration/publisher comparison uses original paraphrases, not a full authentic source set. Nine further lessons and 27 explained tasks introduce critics from the Left and Right through Thomas, the June 1936 Communist platform, Townsend’s changing pension plans, Long’s dated redistribution appeal, Coughlin’s monetary proposals and antisemitic propaganda, Republican alternatives and Smith’s Liberty League intervention. A selected Smith/Thomas comparison and a dated official election-table exercise distinguish shared opposition, different institutions, audience, votes and influence. These are original introductory case studies, not complete political histories. Enquiry 6.3 remains partial: wider programme implementation and local, racial and gender access and outcomes, deeper organisational and regional histories of opposition, earlier and later political tactics, further Supreme Court rulings and fuller political and legal depth still need teaching and practice. Ten further lessons and 30 explained tasks begin enquiry 6.4 through the January 1935 security initiative, selected original Social Security assistance, benefit and tax provisions, Wagner Act rights and Board procedures, and WPA creation and work rules. A selected proposal/statute comparison uses original paraphrases, not a full authentic source set. Ten further lessons and 30 explained tasks introduce the 1936 election through the electoral result and its denominator, party claims and pledges, Roosevelt’s Philadelphia economic-freedom argument, the September farm–city broadcast, labour mobilisation, Black political agency and Southern resistance, Farley’s organisation, the July postmaster procedures and June relief anti-coercion provisions. A selected Roosevelt/Republican comparison distinguishes shared concern with insecurity from different institutions. Fourteen further lessons and 42 explained tasks introduce selected 1935–1937 mechanisms: the June tax proposals and enacted individual and corporate schedules; NYA creation and student-aid limits; original rural power loans and allocations; conservation plans, payments and tenant safeguards; farm-acquisition and rehabilitation finance; and original low-rent housing access and finance. A selected tax-proposal/electrification-statute comparison distinguishes instruments and evidence of outcomes. Sixteen further lessons and 48 explained tasks introduce the 1937–1938 recession through industrial measures, fiscal cash flows, payroll collection, reserve requirements and bank responses, Treasury gold finance, inventories and prices, employment and hours, uneven business and household effects, the April recovery proposals, June work-relief and public-works authority, and an upturn with continuing weaknesses. A selected Roosevelt/Eccles comparison preserves the latter’s expressly personal standpoint. All three listed recession strands now have introductory teaching; full historical and assessment coverage remains unfinished. Ten further lessons and 30 explained tasks introduce the original 1938 Fair Labor Standards Act and its 1941 Darby validation: commercial coverage, phased wages and overtime, distinct exemptions, child-labour conditions, special certificates, enforcement and stronger applicable state standards. A selected statute/Court comparison distinguishes purpose, constitutional validity and measured outcomes. This is a selected labour-standards introduction, not complete beneficiary, exclusion or government-change coverage. Eleven further lessons and 33 explained tasks introduce family security under the original 1939 Social Security amendments: earlier monthly operation, worker qualification, wives, widows, children and parents, continuing employment exclusions, distinct state assistance, claims and hearings, pooled finance, actual January–June 1940 payment records and startup limits. A selected law/trustees comparison distinguishes legal rights, recorded delivery and unproven household adequacy. This is a selected family-security introduction, not complete beneficiary, exclusion, administrative or economic-recovery coverage. Enquiry 6.4 remains partial: fuller revenue and programme histories, political motives, deeper regional election and coalition histories, reception and causal evidence, fuller patronage and civil-service practice, programme implementation and unequal access and outcomes, deeper fiscal and bank series, industrial and household experiences, and government, recovery and experiences through 1941 still need further teaching and practice. The 1937 proposal is later follow-through within 6.3, not an event of the First 100 Days. Historical depth, wider authentic reading, subject-specialist review, complete source sets, full papers and calibrated marking remain unfinished. Selected source cards are labelled original paraphrases, not quotations or complete authentic documents. Existing 2026 lessons receive no automatic revised-year credit.
Teaching brief and original analytical model
The opening brief is original StudyForA teaching prose, not a quotation, contemporary document or historian’s extract. The Great Crash, the Great Depression and the New Deal, 1920–1941 is an American Paper 2 topic in 2027 and 2029, and the American Paper 1 topic in 2028. Paper 1 Historical sources is 75 minutes and 40 marks: answer both parts of one question using four sources totalling at most 600 words, with at least three written sources and up to one visual. Part (a) compares two sources for 15 marks; part (b) uses all four sources and contextual knowledge for a 25-mark judgement. Paper 2 Outline study is 105 minutes and 60 marks: answer two questions from one section and both parts of each, with a 10-mark causal explanation and a 20-mark argument. These lessons are introductory practice, not a complete assessment programme.
StudyForA teaching brief · Boom, crash and Depression: what needs explaining?
[1] Original analytical brief. Separate output, share prices and household security before building a causal explanation. This is StudyForA teaching prose, not a contemporary document or a historian’s extract. Write before opening the model.
1. How would you improve “the crash and Depression were exactly the same event”?
Compare after trying
The causes of the crash and the causes of prolonged depression overlap but should not be treated as one question. A market valuation can fall suddenly while output and employment respond through additional decisions. Distinguishing those outcomes makes it possible to explain mechanisms instead of merely repeating a dramatic event name.
The invented factory calculation shows why measurement matters. More items do not necessarily produce higher money revenue, and revenue is not profit. Historical totals similarly need definitions and dates before they can support a claim about prosperity. Household security also depends on distribution, work and debts rather than one national average.
A convincing causal account therefore starts before October 1929, explains the market shock, and follows subsequent transmission and persistence. Confidence, borrowing and banking can connect the stages, but their relative importance must be tested against dated evidence. The crash remains significant without becoming a sufficient explanation for every earlier weakness or every later year of hardship. These introductory distinctions organise further investigation rather than establish completed historical or assessment coverage.
Why this response fits
- Connect a dated provision or event to the mechanism in the question.
- Weigh scope, practical access, implementation and contrary evidence.
- This original analytical model is not a calibrated examination script or Cambridge grade.
Three outcomes need different measures
A boom is sustained expansion in economic activity, while a stock-market crash is a sudden collapse in securities prices. A depression is a prolonged, severe contraction affecting output, employment and incomes. They can be connected without being identical. A share-price series measures market valuations of selected companies. It does not directly count the goods produced or people employed, and it cannot reveal every household’s circumstances. Begin an answer by identifying the outcome, place and dates rather than treating the whole period as one event.
Read a rising total carefully
Suppose an invented factory sells 100 items at 10 dollars in one year and 120 at 8 dollars in the next. Physical output rises by 20 percent, but sales revenue falls from 1,000 to 960 dollars. Neither figure alone establishes profit, because costs are missing. This example is original teaching arithmetic, not a historical national statistic. It shows why an argument about prosperity must distinguish quantities, prices, money income and purchasing power before attributing change to a policy or production technique.
Keep the sequence open to explanation
The American downturn began before the October 1929 market collapse, and subsequent banking crises occurred after it. This chronology rules out treating all earlier weakness as the effect of one later trading day. It does not make the crash irrelevant: losses and uncertainty could worsen spending and investment. Distinguish vulnerability before a shock, the immediate trigger, the channels spreading its effects and the reasons recovery failed. Different causes can carry different weight at each stage, so an explanation needs more than one undated list.
Test household and sectoral conclusions
An aggregate combines different experiences. A growing consumer industry can coexist with weak farm returns, insecure work and unequal wealth. Similarly, a fall in a stock index is not proof that every resident owned shares or lost the same proportion of income. To move from a national measure to a claim about people, seek employment, income, debt and sectoral evidence. Our course introduces these relationships; fuller historical depth and assessment remain unfinished. Use the linked retrospective histories to investigate competing explanations, not as contemporary eyewitness accounts.
Sources for this lesson
- Cambridge History 9489 · 2027–2029 Version 2 · American enquiry 6.1 p. 28, AS rotation pp. 37–38 and assessment pp. 66–69
- Cambridge History 9489 · 2027–2029 update · Version 2 changes, April 2025
- Federal Reserve History · Stock Market Crash of 1929 · dated market sequence, credit debate and New York response; retrospective interpretation
- Federal Reserve History · Banking Panics of 1930–31 · membership, correspondent networks and district differences; retrospective interpretation
Pause and explain
Which explanation best fits this lesson?
Worked example
In the invented factory, what happens to revenue and output?
Show the worked solution
- Calculate 100 × 10.
- Calculate 120 × 8.
- Distinguish quantity from value.
Answer Output rises from 100 to 120 items, but revenue falls from 1,000 to 960 dollars. Profit cannot be calculated without costs; the figures do not measure a real American factory.
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: In the invented factory, what happens to revenue and output?
Give me a hint
Calculate each year separately before comparing.
Compare my reasoning
- Calculate 100 × 10.
- Calculate 120 × 8.
- Distinguish quantity from value.
Output rises from 100 to 120 items, but revenue falls from 1,000 to 960 dollars. Profit cannot be calculated without costs; the figures do not measure a real American factory.
Look for these in your work
- Uses the relevant dated evidence
- Explains the mechanism and the specific limit
Independent: Why can October share prices not explain every earlier economic weakness?
Give me a hint
Put the downturn and trading collapse in chronological order.
Compare my reasoning
- Identify the earlier conditions.
- Date the market shock.
- Trace what it could worsen afterwards.
An event cannot cause an already-existing condition through a later effect. The crash could intensify contraction, but earlier vulnerabilities require their own evidence and mechanisms.
Look for these in your work
- Uses the relevant dated evidence
- Explains the mechanism and the specific limit
Transfer: How would you improve “the crash and Depression were exactly the same event”?
Give me a hint
Define outcomes, dates and channels.
Compare my reasoning
- Separate valuations from activity.
- Identify transmission through spending or credit.
- Explain persistence separately.
The crash concerned share prices; the Depression involved prolonged contraction in employment, income and production. Connect them through losses, confidence and finance, then explain later banking and spending feedback rather than making the terms interchangeable.
Look for these in your work
- Uses the relevant dated evidence
- Explains the mechanism and the specific limit
Common mistakes
- Treating an index as a household census
- Using a later event to cause an earlier condition
What can you explain now?
Which explanation best fits this lesson?
Compare with the explanation
Identify the outcome, measurement and stage of the causal sequence
Output rises from 100 to 120 items, but revenue falls from 1,000 to 960 dollars. Profit cannot be calculated without costs; the figures do not measure a real American factory.
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Make it stick
Which explanation best fits this lesson?
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.