APWH · Unit 5— c. 1750 — c. 1900 —

When ideas overthrew kings.

Enlightenment, American, French, Haitian, Latin American — and the Industrial Revolution that transformed everything that followed.

What you need to know

The Enlightenment’s natural rights and social contracts supplied the vocabulary; bourgeois fiscal pressure and colonial grievance supplied the motive; revolutions in America (1776), France (1789), Haiti (1791), and Latin America (1810s–20s) supplied the precedent. Britain’s Industrial Revolution transformed production starting in the 1760s. Together, these revolutions made the modern political-economic order: liberal-capitalist, nationalist, industrial.

CED topics (10)

The unit, topic by topic.

Deeper Context

Beyond the AP rubric: the era behind Unit 5

The 1750–1900 stretch in this unit lives inside a much wider story. For long-form context — themes, primary sources, and the moments that didn’t make the CED — read the era page(s):

  • 5.1

    The Enlightenment

    Reason, natural rights, and the social contract.CDI · GOV

    What to study

    The Enlightenment (c. 1685–1815) applied reason to politics, economics, and religion. Locke’s natural rights (life, liberty, property) and Rousseau’s social contract (legitimate government from the general will) supplied the vocabulary of revolution. Voltaire pushed for tolerance and freedom of speech. Montesquieu’s separation of powers shaped the U.S. Constitution. Smith’s Wealth of Nations (1776) launched modern economics. Salons in Paris and coffeehouses in London circulated ideas. Crucially, women like Mary Wollstonecraft and Olympe de Gouges extended Enlightenment logic to gender.

    Key termsJohn Locke · Voltaire · Rousseau · Montesquieu · Adam Smith · Mary Wollstonecraft
    Exam focusCite SPECIFIC philosophers and their KEY IDEAS, then connect those ideas to specific revolutions.
    Primary sourceJohn Locke, Second Treatise of Government (Chapter II), 1689 — Project Gutenberg
    Locke articulates natural rights and the social contract — the Enlightenment’s foundational political text that justified revolution in America, France, and Latin America.
    Whose story is missing?

    “Woman is born free and remains equal to man in rights… If nature has established any true difference between man and woman, let those who are wise discern it; but until that moment, the laws of nature and reason condemn this principle of inequality.” — Olympe de Gouges, Déclaration des droits de la femme et de la citoyenne (Declaration of the Rights of Woman and the Female Citizen), 1791

    De Gouges (1748–1793) published this document as a direct response to the male-authored Declaration of the Rights of Man, arguing that the Enlightenment’s promises of universal rights were being applied only to men. She was a French abolitionist and playwright who had argued for the abolition of slavery and was now arguing for women’s political rights. She was executed by guillotine in 1793 during the Reign of Terror. Her document is one of the earliest feminist political texts in European history. Read the source →

  • 5.2

    Nationalism and Revolutions

    How nationalism shaped political change.GOV · CDI

    What to study

    Nationalism—loyalty to the nation rather than the monarch—emerged from the Enlightenment and the Atlantic Revolutions. By the 19th century it drove German and Italian unifications, Greek independence from the Ottomans, and anti-colonial movements in Latin America. Nationalism was double-edged: it built democratic states but also fueled imperialism, ethnic cleansing (Ottoman Armenians, eventually), and 20th-century totalitarianism. Print culture (Anderson’s “imagined communities”), mass schooling, and military conscription forged national identity from above.

    Key termsNationalism · Unification · Imagined communities · Print culture · Conscription
    Exam focusDistinguish CIVIC nationalism (rights-based) from ETHNIC nationalism (blood-based). The exam loves this contrast.
    Primary sourceSimón Bolívar, Jamaica Letter, 1815 — Fordham Internet History Sourcebooks
    Bolívar analyzes why Latin America must be independent and what kind of governments it needs — nationalism and revolution filtered through a creole elite’s perspective.
    Whose story is missing?

    “We have been harassed by a conduct which has not only deprived us of our rights but has kept us in a sort of permanent infancy with regard to public affairs… We were told to obey, and we obeyed; to be silent, and we were silent.” — Simón Bolívar, Carta de Jamaica (Letter from Jamaica), September 6, 1815

    Bolívar wrote this letter while in exile in Jamaica, after early defeats in the independence struggle. It is a foundational document of Latin American nationalist thought—and a key text for understanding how Enlightenment ideas about sovereignty and self-governance were adapted and applied by colonial subjects who had been denied them. His framing of colonial rule as “permanent infancy” directly challenged the paternalist logic used to justify empire. Read the source →

  • 5.3

    Atlantic Revolutions

    American, French, Haitian, Latin American.GOV · WOR

    What to study

    The American Revolution (1775–1783) created the first modern republic outside Europe. The French Revolution (1789) declared the Rights of Man, dethroned a king, and produced Napoleon. The Haitian Revolution (1791–1804) was the only successful slave revolt in modern history; Toussaint Louverture led it. Latin American independence (1810s–1820s) under Bolívar and San Martín ended Spanish-Portuguese rule. Each revolution drew on Enlightenment ideas; each had different social compositions and outcomes. Haiti’s revolution was the most radical.

    Key termsAmerican Revolution · French Revolution · Haitian Revolution · Bolívar · Toussaint Louverture
    Exam focusCompare social bases: who led, who followed, who was excluded? Haiti’s slave-led revolution sets the bar.
    Primary sourceHaitian Declaration of Independence, 1804 — Facing History & Ourselves
    The first successful slave revolution’s founding document — the most radical statement of Enlightenment equality, written by and for the people European empires enslaved.
    Whose story is missing?

    “We have sworn to have no more masters. We have broken our chains. Let us go down to the graves of our ancestors and, dragging from them that fierce energy which was the distinguishing character of our fathers, let us cease to be slaves of those who call themselves our betters.” — Jean-Jacques Dessalines, Haitian Declaration of Independence, January 1, 1804 (translated from French)

    Dessalines (1758–1806) was a formerly enslaved man who became a general in the Haitian Revolution and proclaimed Haitian independence on January 1, 1804. Haiti was the only nation in history created by a successful enslaved people’s revolt. The declaration explicitly invoked the memory of enslaved ancestors and the violence of the plantation system—a voice and a revolution that the rest of the Atlantic world worked to isolate, ignore, and punish for the next century. Read the source →

  • 5.4

    Comparison: Causes

    Common ideological roots, different local contexts.GOV · CDI

    What to study

    Common causes: Enlightenment ideas, fiscal crises (post-Seven Years’ War debt), Napoleon’s disruption of colonial control. Different local contexts: settler-colonial elites (American), bourgeois revolution against monarchy (French), enslaved population (Haitian), Creole elite vs. peninsular Spanish (Latin American). Each revolution’s outcome reflected its social base: U.S. preserved slavery and elite rule; France oscillated; Haiti abolished slavery and became Black-led; Latin America replaced Spanish elites with Creole ones, leaving slavery and racial hierarchy mostly intact.

    Key termsComparison · Social base · Outcomes · Slavery · Creole vs. peninsular
    Exam focusStrongest analysis ties the social base to the outcome. Who led decided what changed.
    Primary sourceRobespierre, Report on the Principles of Political Morality, 1794 — Fordham Internet History Sourcebooks
    Robespierre defends the Terror as necessary for the Republic — a primary source for comparing how revolutionary ideals were distorted or radicalized across Atlantic revolutions.
    Whose story is missing?

    “In overthrowing me, you have done no more than cut down the trunk of the tree of black liberty in Saint-Domingue. It will spring back from the roots, for they are numerous and deep.” — Toussaint Louverture, upon his arrest and deportation to France, 1802

    Toussaint Louverture (c. 1743–1803) was the leader of the Haitian Revolution, born into slavery and self-educated. His statement, made when French agents captured him under a false flag of truce, became one of the most celebrated declarations in revolutionary history. The Haitian Revolution sits at the intersection of every Atlantic Revolution—it took the Enlightenment’s promises of liberty, equality, and natural rights and demanded they apply to enslaved people. The French, Spanish, and U.S. governments all worked to suppress it. Read the source →

  • 5.5

    The Industrial Revolution Begins

    Why Britain, why textiles, why steam.TEC · ECN · ENV

    What to study

    Britain industrialized first because it had: coal close to iron, navigable rivers and canals, colonial markets, agricultural surplus from enclosure, capital from Atlantic trade, and a relatively stable government. Textiles came first (the spinning jenny, the water frame, the steam-powered loom); the cotton-gin made U.S. cotton economically viable. Watt’s improved steam engine (1769) generalized industrial power: pumping mines, then driving factories, then railways and ships. The transformation was structural: from rural cottage to urban factory, from artisan to wage-laborer.

    Key termsSpinning jenny · Cotton gin · Steam engine · Enclosure · Coal-iron · Factory system
    Exam focusDon’t just list inventions. Explain WHY Britain (the political-economic-environmental combination) and WHY textiles first.
    Primary sourceAdam Smith, The Wealth of Nations (Book I, Chapter 1), 1776 — Project Gutenberg
    Smith’s account of the pin factory and division of labor is the Industrial Revolution’s founding economic text — explaining why Britain industrialized first.
    Whose story is missing?

    “I am now twelve years of age. I began work in the mill at seven. We work from six in the morning until seven at night, with half an hour for dinner. I have been beaten with a strap many times when I fell asleep at the machine.” — Elizabeth Bentley, testimony before the Sadler Committee on Child Labor, House of Commons, 1832

    Bentley was a former child worker in a Leeds textile mill who testified before Parliament’s Sadler Committee—one of the first major investigations into industrial labor conditions. Her testimony was among the accounts that led directly to the Factory Act of 1833. The standard AP coverage of the Industrial Revolution focuses on technological innovation, economic growth, and productivity. The testimony of workers like Bentley shows what the factory system looked and felt like at its productive core. Read the source →

  • 5.6

    Industrialization Spreads

    Continental Europe, U.S., Japan—and not others.ECN · TEC

    What to study

    Industrialization spread unevenly. Belgium, France, and the German states industrialized through the early-to-mid 1800s, building railways and steel industries. The U.S. industrialized after the Civil War. Japan’s Meiji Restoration (1868) launched state-led industrialization, the only non-Western successful case until much later. Russia industrialized late and slowly under Witte’s reforms. Latin America, Africa, and most of Asia did not industrialize but were integrated into the global economy as raw-material exporters—creating the divergence in living standards still with us today.

    Key termsMeiji Restoration · State-led industrialization · Witte · Great Divergence
    Exam focusThe “why some, not others” question is key. Tie outcomes to capital, state capacity, and colonial position.
    Primary sourceMeiji Constitution of Japan, 1889 — Yale Avalon Project
    Japan’s constitutional monarchy blends Western legal forms with imperial authority — the model document for how non-Western states adapted industrialization on their own terms.
    Whose story is missing?

    “Heaven does not make one person the lord of another. It is through learning that people become nobles and through ignorance that they become commoners. The distinction between noble and common does not lie in birth, but in education.” — Fukuzawa Yukichi, Gakumon no Susume (An Encouragement of Learning), 1872 (translated from Japanese)

    Fukuzawa (1835–1901) was Japan’s most influential public intellectual of the Meiji era, who had traveled to the United States and Europe and argued that Japan must modernize to survive Western imperialism. His 1872 essay sold over three million copies. He argued that Japan’s strength would come not from copying Western forms but from educating the entire population—a radical democratization of knowledge in a society structured by feudal hierarchy. Read the source →

  • 5.7

    Technology in the Industrial Age

    Steam, steel, electricity, internal combustion.TEC

    What to study

    The First Industrial Revolution (c. 1760–1840) ran on steam, iron, and textiles. The Second (c. 1870–1914) ran on steel (Bessemer process), electricity (Edison, Tesla), chemicals, and the internal combustion engine. Each wave compounded productivity and reshaped daily life. By 1900, electricity was lighting cities; the telegraph and telephone connected continents; railways and steamships moved goods globally; cars and (soon) airplanes promised to transform mobility. Each technology created winners and losers.

    Key termsBessemer process · Electricity · Internal combustion · Telegraph · Steamships
    Exam focusPair each technology with a SPECIFIC industry it transformed and a SPECIFIC social effect it produced.
    Primary sourceAndrew Ure, The Philosophy of Manufactures (on factory conditions), 1835 — Fordham Internet History Sourcebooks
    An industrialist defends factory labor as beneficial — a primary source for the debate over technology’s social effects and the ideological justifications for industrial capitalism.
    Whose story is missing?

    “Frame-work knitters and others have taken account to inform you, that the frames are the cause of our poverty… We have sworn to break every one of them unless you remove them, or reduce wages to what they were before these machines came in.” — Anonymous, letter signed “General Ned Ludd,” Nottingham, c. 1811 (from documented Luddite correspondence in the British National Archives)

    The Luddites were skilled textile workers in England who systematically destroyed industrial machinery between 1811 and 1816. They were not opposed to technology in general—they were opposed to specific machines being used by specific owners to replace skilled labor with cheap, unskilled workers. The Luddite letters, preserved in government archives, document the economic logic of the resistance: this was about wages, livelihoods, and power in the new industrial order, not ignorance of technology. Read the source →

  • 5.8

    Industrial Economies and Society

    Capitalism, labor, urbanization, family.ECN · SOC

    What to study

    Industrial capitalism produced extreme growth and extreme inequality. Cities exploded: Manchester, Birmingham, New York, Tokyo. Workers worked 12-hour days in dangerous conditions. Children worked in mines and mills. Family structure changed as paid work moved out of the home. Trade unions emerged (slowly, against legal hostility). Marx and Engels wrote The Communist Manifesto (1848) arguing that workers should overthrow the system. Liberal reformers (factory acts, public health) tried to soften capitalism. The 19th century’s political fights were largely about industrial society.

    Key termsCapitalism · Marxism · Trade unions · Urbanization · Factory acts · Communist Manifesto
    Exam focusCite specific industrial-era reform laws AND specific labor responses. Both sides matter.
    Primary sourceFriedrich Engels, The Condition of the Working Class in England, 1845 — Project Gutenberg
    Engels documents Manchester’s industrial slums — the defining account of how industrialization created urban poverty and the class conflicts that drove reform and revolution.
    Whose story is missing?

    “I wear a belt and chain at work. The belt goes round my waist and the chain passes between my legs. I am nineteen years old. I have been hurrying coal since I was a child. The pit is very wet where I work, and the water comes over my clog-tops always.” — Betty Harris, testimony before the Children’s Employment Commission (Mines), House of Commons, 1842

    Betty Harris was a coal hurrier in Lancashire—one of thousands of women and children who dragged coal carts through underground mine passages on their hands and knees. Her testimony before the 1842 Parliamentary Commission was among the accounts that led to the Mines Act of 1842, which banned women and children under ten from underground work. Her voice represents the industrial economy’s most invisible labor: the people whose bodies powered the factories that powered British industrial dominance. Read the source →

  • 5.9

    Reactions to Industrialization

    Marxism, utopian socialism, Romanticism.SOC · CDI

    What to study

    Reactions ranged from radical to reactionary. Marx and Engels argued capitalism would inevitably collapse from its own contradictions, replaced by socialism. Earlier utopian socialists (Owen, Fourier) tried to build alternative communities. Romantic poets and artists rejected industrial ugliness for nature and emotion. Trade unions and the labor movement built worker power. Conservative governments responded with expanded suffrage (Britain’s Reform Acts), social insurance (Bismarck’s Germany), and factory regulation. Industrial society would generate the political ideologies of the 20th century.

    Key termsMarxism · Utopian socialism · Romanticism · Bismarck · Reform Acts
    Exam focusMap each reaction to its political home: radical left, moderate liberal, conservative reform.
    Primary sourceKarl Marx and Friedrich Engels, The Communist Manifesto, 1848 — Project Gutenberg
    “Workers of the world, unite!” — the most influential reaction to industrialization, arguing that class struggle drives history and capitalism contains the seeds of its own destruction.
    Whose story is missing?

    “The workers have nothing to lose but their chains. They have a world to win.” — Karl Marx and Friedrich Engels, The Communist Manifesto, 1848

    AP covers reactions to industrialization through socialism, Marxism, and Romanticism as ideological responses. But these were not merely intellectual positions—they emerged from and fed back into actual labor organizing, political parties, and revolutionary movements. The Revolutions of 1848, which AP covers in the nationalism unit, were simultaneously nationalist and socialist revolts in which workers’ economic grievances and nationalist political claims were intertwined. Understanding why millions of industrial workers found Marxism compelling requires taking their economic experience seriously rather than treating it as a policy debate among intellectuals. Read the source →

  • 5.10

    Comparison: Industrial Effects

    Comparing different societies’ industrialization.ECN · SOC

    What to study

    Strong comparison angle: Britain vs. Japan—both industrialized but Britain organically and bourgeoisie-led; Japan via state-led Meiji reform under samurai-bureaucrat leadership. Or: industrializers (Britain, U.S.) vs. raw-material peripheries (Latin America, Africa, India). Or: timing—first industrializers (Britain) had to invent technology; later industrializers (Japan, Germany) could import it but had to catch up under competitive pressure. Each comparison rewards specific evidence.

    Key termsComparison · State-led vs. market-led · Periphery · Late industrializer
    Exam focusPick a comparison where the divergence is CAUSAL: outcomes differed BECAUSE of starting conditions.
    Primary sourceMeiji Emperor, Charter Oath, 1868 vs. Manchester Workers’ Petition, 1817 — Yale Avalon Project
    The Meiji Oath’s top-down industrialization program compared to British workers’ bottom-up reform demands illustrates the range of responses to industrialization across societies.
    Whose story is missing?

    “We, the working people of St. Petersburg of various estates, our wives, our children, and our aged parents, come to seek justice and protection. We have been made into slaves… Everywhere death rules over us—the death of slow starvation.” — Father Georgy Gapon, Petition to Tsar Nicholas II, January 9, 1905 (Bloody Sunday)

    Gapon led a peaceful march of over 100,000 workers and their families to the Winter Palace to present a petition for better wages, shorter hours, and political representation. The tsar’s troops opened fire, killing or wounding hundreds. “Bloody Sunday” triggered the 1905 Revolution. The petition documents Russian industrial workers’ experience of rapid industrialization from below—and the gap between the official ideology of the tsar as “father of the people” and the reality of industrial capitalism. Read the source →

Practice the skill — LEQ

Practice LEQ stem.

Evaluate the extent to which Enlightenment ideas caused the Atlantic Revolutions (American, French, Haitian, OR Latin American) between 1750 and 1830.

Practice in the LEQ Lab

Connect to your study

Era page: see the Eras of World History hub for the period’s broader global context.

Practice: FRQ Lab · Practice MCQs · Unit 5 flashcards