Roaring Twenties Resource Notes (2025–2026 Social Science Resource Guide)

Introduction

The Roaring Twenties: a pivotal decade bookended by World War I and the Great Depression; marked by rapid modernization, mass culture, and deep social contradictions.
Key themes: mass production, mass media, mass consumption, civil liberties tensions, and a global shift in American leadership and isolationism.
Important figures and forces: Henry Ford and Fordism; the rise of Hollywood and jazz as global exports; Prohibition; the Harlem Renaissance; the Red Scare; immigration restriction and eugenics; the New Woman; Lost Generation; and the Dawes Plan.
Major institutions/events shaping the era: League of Nations debate, Washington Naval Conference, Scopes Trial, Buck v. Bell, Kellogg-Briand Pact, and the Dawes/Young Plans.

Section I: Post-War America: The Dawn of a New Era

1919: A Tumultuous Year

War toll and Spanish flu: WWI casualties and a global influenza pandemic strain society; outbreak among troops in 1918; millions died worldwide.
Domestic unrest: massive labor strikes across industries; wave of bombings; rising racial tensions.
Wilson’s Fourteen Points and postwar order: self-determination, freedom of the seas, free trade, and a general association of nations (League of Nations).
Wilson’s health and diplomacy: stroke in 1919; health crisis disrupts peace negotiations and Senate ratification efforts.
Senate opposition: Lodge’s Reservationist coalition opposes Article X; Wilson conducts a cross-country tour but health collapses, Senate rejects Versailles and League ( $1919$ – $1920$ ).
Civil liberties and Red Scare: Espionage and Sedition Acts; Palmer Raids; suppression of dissent; Supreme Court cases curtailing free speech in wartime.
Race and migration: Great Migration reshapes urban America; Harlem Renaissance begins; racial violence and Red Summer of 1919.
Cultural shifts: Jazz, modernism, and new Black cultural expression expand globally.

The Fourteen Points and the Paris Peace Conference

Wilson’s vision for a new world order centered on democracy and collective security via the League of Nations.
Tension with Allies: France and Britain seek punitive terms against Germany; Wilson compromises but League inclusion remains a central goal.
Versailles outcome: German blame, reparations, territorial concessions; League Covenant included, but U.S. Senate rejects participation.
Aftermath: U.S. turns toward isolationism; Wilson’s illness further weakens diplomacy.

Cross-Country Tour and Health Crisis

Wilson’s 9,981‑mile tour to rally support for the League; health deteriorates on the road; stroke leaves him incapacitated.
Lodge’s reservations widened Senate opposition; Wilson’s absence weakens the treaty’s passage.
End result: Versailles Treaty fails to win U.S. ratification; League of Nations cannot be effectively enforced without U.S. participation.

The Demise of the Treaty

Senate rejection marks a turning point toward American isolationism; Wilsonian internationalism wanes temporarily, though ideas persist for future institutions (e.g., UN).

The Erosion of Civil Liberties

Labor unrest and the Red Scare contribute to crackdowns on civil liberties; Espionage and Sedition Acts cited in prosecutions.
Supreme Court cases: Schenck v. United States (clear and present danger standard) and Abrams v. United States reflect wartime constraints on speech.
Sacco and Vanzetti (1927) underscore xenophobia and anti-radicalism; broader climate of suspicion toward immigrants.

A Watershed Moment for African-American Culture and Politics

The Great Migration accelerates; urban Black communities grow and reshape culture.
Harlem Renaissance emerges as a major cultural and political movement highlighting Black art, music, and thought.
Marcus Garvey and the UNIA promote Black self-reliance and Black-owned enterprises; tensions with NAACP.

Jazz Conquers the Globe

Jazz originates in New Orleans, spreads through the Midwest to Chicago and abroad; key figures: Louis Armstrong, Duke Ellington, Count Basie, Josephine Baker.
Global diffusion: radio, electric recording, and mass media accelerate jazz’s worldwide influence.
Jazz as symbol of modernity and resistance to conventional norms; linked to the era’s social upheavals.

The Red Summer

1919 waves of racial violence and lynchings across Northern and Southern cities; Chicago riot (July 1919) as a flashpoint.
White supremacist violence and civil unrest reveal deep-seated racial tensions and the limits of postwar democracy.

Marcus Garvey and the UNIA

Garvey promotes Black nationalism and pan-Africanism; UNIA grows rapidly with mass rallies and a transnational reach.
Legal troubles culminate in a conviction for mail fraud; Garvey deported in 1927, but his ideas influence later Black nationalist movements.

Constitutional Amendments and the End of the Progressive Era

The Eighteenth Amendment (Prohibition) takes effect in 1920; Volstead Act enforces national ban on alcohol; enforcement creates a black market and corruption.
The Nineteenth Amendment (1920) grants women the right to vote; turnout lags and political impact is uneven due to continuing disenfranchisement of Black women in the South.
The Dawes Plan and dollar diplomacy attempt to stabilize postwar Europe; international debt flows create a fragile global financial system.

A Return to “Normalcy”: Republican Rule Returns to Washington

Warren G. Harding’s campaign promises a return to normalcy; landslide 1920 victory.
Foreign policy shifts: Washington Naval Conference (1921) seeks to limit naval power among major powers; Three treaties (Five-Power, Four-Power, Nine-Power) shape postwar balance of power.
Domestic scandals: Teapot Dome, other graft undermine public trust; Harding’s death concludes a presidency shadowed by corruption.
The Coolidge Administration continues pro-business, limited-government policies; Dawes Plan stabilizes European debt; prosperity continues but inequality persists.
Section I Summary: key takeaways on Wilsonianism’s demise, labor unrest and the Red Scare, civil liberties erosions, mass migration, Prohibition and women’s suffrage, and the shift to Republican normalcy.

Section II: Prosperity and Technological Advancements

Mass Production of the Automobile

Ford and Fordism: assembly line innovations transform manufacturing; dramatic productivity gains; prices plummet, broadening car ownership.
Five-dollar day and wage strategies help forge a mass workforce and a consumer base; expansion of corporate management practices.
Vertical integration and on-site production of materials stabilize supply chains and lower costs.
Car ownership expands mobility, urban planning, and the suburbanization of America; road infrastructure investment grows.
Mass production spurs a ripple effect in steel, oil, rubber, glass, and related industries.

Welfare Capitalism

Companies offer health, life insurance, pensions, stock plans, and employee representations to foster loyalty and reduce labor unrest.
Company towns and worker benefits create a paternalistic corporate culture; decline of independent labor activism through the 1920s.
Ford’s Sociological Department and English-language/civic training programs illustrate corporate assimilation campaigns.

A Nation on Wheels

The automobile reshapes the landscape: highways, drive-ins, motels, and a new culture of travel and leisure.
Suburbanization and the freeway era emerge; rural Americans gain mobility but face new safety challenges and costs.
Auto tourism and national parks promote travel and consumerism; roads become social spaces (gas stations, diners, entertainment).

Mass Consumption

Electrification and Home Appliances: electricity expands rapidly; mass-produced appliances enter homes; refrigerators become common.
Advertising drives consumer demand; mass media, branding (Betty Crocker, Jolly Green Giant), and celebrity endorsements reshape consumer culture.
Easy credit and installment buying enable widespread purchasing; rising consumer debt accompanies the boom.

Mass Communication: The Radio

The Broadcasting Revolution: radio grows from niche technology to mass medium; KDKA’s early broadcasts; RCA leads and dominates.
Government regulation emerges: Radio Act of 1927 establishes the Federal Radio Commission (FRC).
Radio fosters a shared national culture while supporting regional and ethnic subcultures; fireside chats and political programming shape public life.

Mass Entertainment

Hollywood’s rise: film industry becomes a global cultural force; shift from silent to talkies with The Jazz Singer (1927).
Movie palaces and mass spectatorship redefine leisure; star system and public relations shape celebrity culture.
Sports become mass entertainment; Babe Ruth and college football epitomize the era’s athletic celebrity culture.

Section II Summary

Ford revolutionizes production and labor relations; mass production lowers costs and enables broad car ownership.
Welfare capitalism reduces direct labor activism but consolidates corporate power.
The automobile, electrification, advertising, radio, and film fuse to create a mass consumer culture and a new national identity.

Section III: Social and Cultural Upheaval

The View from Middletown

The Lynds’ Middletown study (Muncie, Indiana) captures class, religious, and gender tensions in the 1920s.
Working-class vs. middle-class life patterns; reduced religious observance among youth; rising female education and employment.
The study reveals urbanization and social change in a representative small city, underscoring broader national trends.

No Room in The Melting Pot: Resurgent Racism and Nativism

The New Ku Klux Klan (1915–1920s) expands beyond the South, influencing politics in Indiana and other states.
Supreme Court cases re: citizenship and race tighten constraints on naturalization (Ozawa v. United States; United States v. Bhagat Singh Thind).
The Johnson-Reed Immigration Act of 1924 severely limits immigration, privileging Northern/Western Europe and excluding Asians.
Eugenics and pseudoscientific racism justify restrictive immigration and sterilization laws; Buck v. Bell legitimizes sterilization.

The New Women: Changing Gender Ideals

Flappers redefine femininity: shorter dresses, bobbed hair, desire for independence, and new social freedoms.
Women’s work expands in clerical, teaching, nursing, and social work fields; marriage and divorce patterns shift with companionate marriage debates.
Women’s political and social influence grows, but voting patterns remain varied; ERA debates persist without immediate gains.

American Moderns

Bohemians and the Lost Generation: expatriate American writers (Hemingway, Fitzgerald) in Paris challenge traditional American norms.
Modernist art and literature emerge in the U.S.: Stein, Pound, T. S. Eliot, e. e. cummings; Picasso and modern architecture influence aesthetics.
Harlem Renaissance amplifies Black modernist culture; W. E. B. Du Bois, Langston Hughes, Zora Neale Hurston contribute to a powerful Black cultural movement.

The Harlem Renaissance and the New Negro Movement

Harlem becomes a center of Black artistic and intellectual life; political thought and cultural production redefine Black identity.
Garvey’s UNIA and the era’s Black nationalism influence later civil rights movements.

Anxious Age and Freud

Freud’s ideas permeate American culture, influencing literature, film, advertising, and psychology.
Psychiatry and psychology become mainstream social discourse; anxiety, neurosis, and the mind shape public and private life.

The Mind of Leopold and Loeb; Scopes Trial; Aimee Semple McPherson

Leopold and Loeb case raises questions about morality, psychology, and the modern mind; Clarence Darrow’s defense highlights determinism.
Scopes Trial (1925) pits science vs. religion; Bryan’s role underscores cultural clash; Scopes found guilty, impact remains debated.
Aimee Semple McPherson embodies religious modernity: media-savvy evangelism via radio and spectacle; religious broadcasting pioneers.

Prohibition

Prohibition fuels bootlegging, speakeasies, and organized crime; notable figures include George Remus and Al Capone.
Enforcement challenges, corruption, and evolving criminal networks illustrate the limits of policy without effective institutions.

Section III Summary

Middletown as a microcosm of broader change; KKK revival signals racial and religious tensions.
Citizenship, immigration, and eugenics shape policy; Scopes and McPherson symbolize science-religion tensions.
The Harlem Renaissance and Lost Generation reflect a diversification of American culture; modernist ideas permeate society.

Section IV: Economic Crisis and the End of the Roaring Twenties

The 1928 Election and Southern v. Northern Divides

Democratic Party fractures between Southern drys and Northern wets; Al Smith’s Catholicism complicates urban-rural coalition building.
Hoover’s victory signals continued Republican dominance and pro-business policies, yet foreshadows economic fragility.

Hoover “The Great” and His Worldview

Hoover champions individualism, voluntarism, and limited government; skepticism toward direct relief and government intervention.
Public works and limited welfare activities are used to address unemployment without expanding the state.
Hoover’s optimism masks structural vulnerabilities in the economy.

The Stock Market Crash and The Great Depression

1929 crash triggers widespread economic collapse; initial shock followed by deepening economic distress as unemployment surges.
Overproduction, falling prices, and credit tightening destabilize businesses and households.
Bank failures devastate savings; bank runs become common and erode public confidence.
The Dust Bowl and agricultural distress intensify rural suffering; the crisis worsens for marginalized communities.

Domestic Factors

Declining consumer demand, credit dependence, and industrial overcapacity contribute to the downturn.
Auto and housing industries suffer; Detroit’s economy bears a heavy burden.
Unemployment rises steeply; social misery grows; family stability and mental health deteriorate.

International Factors

Global debt dynamics and protectionism compound the downturn; Dawes/Young Plans and war debts complicate international finance.
Smoot-Hawley Tariff Act (1930) triggers retaliatory tariffs; global trade collapses and worsens depressions abroad.
International capital flows contract; the gold standard remains fragile, complicating policy responses.

Hard Times

The human toll is severe: poverty, homelessness, hunger, and social unrest; relief programs lag behind needs.
The American social fabric strains under economic catastrophe; migratory and rural hardships intensify.

Section IV Summary

The 1920s end with a catalyzing economic collapse that reveals the vulnerabilities of mass prosperity.
Hoover’s policy responses prove inadequate; the election of Franklin D. Roosevelt promises a new approach.
The Great Depression transforms American political economy and sets the stage for the New Deal.

Conclusion, Timeline, Glossary, Notes, Bibliography

The era’s lasting legacies include changes in culture, economics, and international policy; many prewar assumptions are overturned and new institutions and ideas emerge.
Timeline highlights key dates and events from 1919 through the early 1930s, including the Versailles debate, Prohibition, Scopes Trial, Harlem Renaissance, stock market crash, and the onset of the Depression.
Glossary covers terms such as AFL, IWW, Ozawa, Thind, Buck v. Bell, Buck v. Bell, Navarro vocabulary, and major policy terms.
Notes and bibliography provide sources for further study and context.

Titles

Title: Roaring Twenties Resource Notes (2025–2026 Social Science Resource Guide)
Theme: Key concepts, dates, people, and policy shifts to aid quick recall and last-minute review.