Revolutions
What this unit covers
The topics below follow the published World History course framework for Unit 5. This unit is worth 12–15% of the exam, so budget your time against that rather than against how long the unit takes to teach.
Lessons in this unit
- The Enlightenment and Its Ideas13 min · 3 objectivesExplain the core ideas of the Enlightenment and their intellectual roots · Analyze how Enlightenment thought challenged traditional authority · Connect Enlightenment principles to later political and social movements
- The Age of Political Revolutions14 min · 3 objectivesExplain how Enlightenment ideas fueled the Atlantic revolutions · Compare the causes and outcomes of major political revolutions · Analyze the global spread of nationalism and calls for self-government
- Industrialization and Its Reactions14 min · 3 objectivesExplain the causes and defining features of the Industrial Revolution · Analyze the social and economic consequences of industrialization · Compare ideological reactions to industrial capitalism
Every term in Unit 5
All 18 terms we publish for Revolutions, with definitions. Reading them through is the fastest way to find the ones you cannot define — then drill those in cram mode until you can produce them without the prompt.
- Enlightenment
- Application of reason to human affairs — natural rights, social contract, separation of powers — supplying the vocabulary of every revolution in this unit.
- Factory system
- Concentrated production under clock discipline and supervision, replacing the cottage industry's domestic pace.
- Social contract
- Government legitimacy derives from the consent of the governed and may be withdrawn. Locke and Rousseau give the argument its revolutionary edge.
- American Revolution
- Colonial rebellion justified by natural rights and no taxation without representation. Its success made Enlightenment principles look practicable.
- French Revolution
- Overthrew monarchy and privilege in the name of liberty, equality and fraternity, then passed through terror to Napoleon — a pattern later revolutions repeated.
- Declaration of the Rights of Man
- Asserted universal rights while excluding women and, initially, the enslaved. Its own logic supplied the argument against those exclusions.
- Haitian Revolution
- The only successful large-scale slave revolt to found a state. Led by Toussaint Louverture, it terrified slaveholding societies everywhere.
- Latin American independence
- Creole elites led by Bolívar and San Martín broke from Spain, keeping the social hierarchy largely intact beneath the new republics.
- Simón Bolívar
- Led independence across northern South America and argued for federation, which fragmented into separate states after his death.
- Nationalism
- Loyalty to a people sharing language, culture or history. Unified Italy and Germany while pulling multi-ethnic empires apart.
- Unification of Italy and Germany
- Both achieved by war and diplomacy — Cavour and Garibaldi, then Bismarck's Realpolitik — creating powers that upset the European balance.
- Industrial Revolution origins in Britain
- Coal and iron, agricultural surplus, colonial markets, available capital, stable government and enclosure-driven labor supply combined there first.
- Steam engine and its consequences
- Freed industry from riverside water power, so factories could concentrate in cities, and powered railways and steamships that shrank distance.
- Second Industrial Revolution
- Steel, chemicals, electricity and the internal combustion engine from about 1870, shifting industrial leadership toward Germany and the United States.
- Adam Smith and laissez-faire
- Argued markets coordinate through self-interest better than state direction — the intellectual defense of industrial capitalism.
- Karl Marx
- Analyzed history as class struggle and predicted proletarian revolution against capitalism. Shaped labor movements and twentieth-century states.
- Utopian socialism and labor unions
- Owen's model communities and later unions sought to soften industrial capitalism from within rather than overthrow it.
- Effects of industrialization on women and children
- Wage labor outside the home for working-class women and children, and a separate-spheres ideology confining middle-class women to the household.
What examiners penalize here
- For revolution comparisons, analyze **who led** and **who benefited**. Elite-led revolutions (American, much of Latin America) often preserved social hierarchies; the **Haitian** revolution, led by the enslaved, uniquely dismantled slavery. That distinction earns comparative-thinking points.
Practice World History
Our practice bank is drawn from across the whole course rather than filtered to one unit, which is closer to how the exam asks anyway — it will not tell you which unit a question is testing.
Questions about this unit
How much of the AP World History: Modern exam is Unit 5?
Unit 5, Revolutions, is worth 12–15% of the World History multiple-choice section according to the published course framework. Across all 9 units that makes it a substantial share — heavier than an even split would give it.
What topics are covered in World History Unit 5?
Revolutions covers Enlightenment, Political revolutions, Industrialization and Reactions. We publish 18 terms with definitions for this unit, all of them on this page.
How should I study World History Unit 5?
Read the 3 lessons below first — about 40 minutes — then drill the 18 terms in cram mode until you can produce each definition from memory rather than just recognize it. Recognition is what makes a unit feel finished when it is not. Finish with practice questions and read the explanation for every one you get right by elimination as well as the ones you miss.
All 9 units of AP World History: Modern
Unit names, topics and exam weights follow the published College Board course framework for AP World History: Modern. AP® is a trademark registered by the College Board, which does not endorse this site.