AP World History: Modern — Complete Guide
All 9 units (c. 1200 to present), 6 themes, DBQ and LEQ rubrics, and the continuity-and-change skill at the heart of the exam.
Unit 1: 1200–1450
Global Tapestry
Unit 1 establishes the state of the world c. 1200: Song China's commercialized economy and Neo-Confucian revival, Dar al-Islam's golden age (Abbasid fragmentation, but flourishing trade and scholarship), South and Southeast Asia (Delhi Sultanate, Srivijaya, Khmer), the Americas (Inca, Aztec/Mexica, Mississippian), Africa (Mali, Great Zimbabwe), and Europe emerging from the High Middle Ages (feudalism, Catholic Church, decentralized monarchies).
Key Points
- Song China: Grand Canal, Champa rice, gunpowder, paper money, civil service exams, foot-binding.
- Dar al-Islam: House of Wisdom (Baghdad), Ibn Battuta, Ibn Khaldun's Muqaddimah.
- Mali: Mansa Musa's 1324 hajj — Cairo gold-market collapse for a decade.
- Europe: manorialism, three-field system, Magna Carta (1215), Crusades.
Unit 2: 1200–1450
Networks of Exchange
The Mongol Empire (Genghis Khan founded c. 1206; Yuan, Ilkhanate, Chagatai, Golden Horde successor khanates) created the Pax Mongolica, integrating Silk Road, Indian Ocean, and trans-Saharan networks. The Black Death (1346–53) killed an estimated 30-50% of Europe's population and reshaped labor systems. Trans-Saharan trade in gold, salt, and enslaved people connected West Africa to the Mediterranean.
Key Points
- Silk Roads: caravanserai infrastructure, bills of exchange, hanseatic-style merchant networks.
- Indian Ocean: monsoon-driven trade, Swahili coast city-states (Kilwa, Mombasa), dhows.
- Trans-Saharan: camel saddles, Ghana → Mali → Songhai succession of West African empires.
- Mongols transmitted technology (gunpowder, printing) and disease (Black Death) westward.
Unit 3: 1450–1750
Land-Based Empires
Gunpowder empires consolidated vast multi-ethnic states: Ottoman (Mehmed II takes Constantinople 1453, Süleyman the Magnificent), Safavid Iran (Shi'a Islam state religion), Mughal India (Akbar's syncretism, Aurangzeb's reversal), Ming and Qing China, Russia (Ivan III, Ivan IV, Peter the Great's westernization). Each used administered bureaucracies, standing armies with gunpowder weapons, and religious legitimation.
Key Points
- Ottoman devshirme system → Janissary corps.
- Mughal zamindar tax-farming and Hindu-Muslim political balance.
- Qing dynasty (1644–1912): Manchu rulers; expanded into Tibet, Xinjiang, Mongolia.
- Romanov Russia (1613–1917) — serfdom intensified as Western Europe abolished it.
Unit 4: 1450–1750
Transoceanic Interconnections
Maritime empires (Portugal, Spain, Netherlands, England, France) built sea-based commercial networks. Columbian Exchange transformed both hemispheres biologically and demographically. Atlantic slave trade forcibly transported an estimated 12.5 million Africans across the Middle Passage between 1500 and 1866. Joint-stock companies (Dutch VOC 1602, English East India Company 1600) pioneered corporate colonialism. Mercantilism dominated economic thinking.
Key Points
- Encomienda → mita → African chattel slavery in Spanish America.
- Silver from Potosí and Zacatecas integrated into a global economy (Manila Galleons to Ming/Qing China).
- Triangular trade and the Middle Passage.
- Mercantilism: bullionism, favorable balance of trade, colonies as captive markets.
Unit 5: 1750–1900
Revolutions
Enlightenment ideas (Locke, Montesquieu, Rousseau, Voltaire) catalyzed Atlantic revolutions: American (1776), French (1789), Haitian (1791–1804, the only successful slave revolution that produced an independent nation), Latin American (Bolívar, San Martín, Hidalgo, Iturbide). Industrial Revolution began in Britain c. 1760–1840 (coal, steam, iron, textile mechanization). Nationalism reorganized Europe (Italian and German unification, 1860s–71). Abolition of slavery and serfdom (British Empire 1833, Russia 1861, US 1865, Brazil 1888).
Key Points
- Declaration of the Rights of Man (1789), Olympe de Gouges' Declaration of the Rights of Woman (1791), Haitian Declaration (1804).
- Adam Smith's Wealth of Nations (1776) → laissez-faire.
- Marx and Engels' Communist Manifesto (1848) responding to industrial inequality.
- Seneca Falls (1848); first-wave feminism; suffrage movements.
Unit 6: 1750–1900
Industrialization and Imperialism
Second Industrial Revolution (c. 1870–1914) brought steel, electricity, chemicals, internal combustion, railroads, telegraphs. European powers, the US, and Japan engaged in 'New Imperialism': Scramble for Africa (Berlin Conference 1884–85 carved Africa among European powers), British Raj in India (1858 after Sepoy Rebellion), French Indochina, Dutch East Indies, US Philippines (1898). Justifications drew on Social Darwinism, 'civilizing mission,' economic demand for raw materials and markets.
Key Points
- Berlin Conference (1884–85) — partition of Africa with no African participation.
- Opium Wars (1839–42, 1856–60) and unequal treaties forced China open.
- Meiji Restoration (1868) — Japan's rapid industrial and military modernization.
- Anti-imperial resistance: Sepoy Rebellion (1857), Boxer Rebellion (1899–1901), Maji Maji (1905–07).
Unit 7: 1900–Present
Global Conflict
WWI (1914–18) destroyed four empires (Ottoman, Russian, Austro-Hungarian, German) and reshaped the global order via the Treaty of Versailles (1919). Russian Revolution (1917) produced the first communist state. Interwar instability — Treaty of Versailles reparations, Great Depression (1929), rise of fascism (Mussolini, Hitler) and militarism in Japan. WWII (1939–45) killed an estimated 70-85 million people, included the Holocaust (≈6 million Jews murdered) and ended with atomic bombings of Hiroshima and Nagasaki (August 1945).
Key Points
- Total war: civilian mobilization, propaganda, women in labor force.
- Versailles 'war-guilt clause' (Article 231) sowed German revanchism.
- Holocaust, Armenian Genocide (1915–17), Nanjing Massacre (1937–38) — 20th-century atrocities AP requires.
- Bretton Woods (1944) → World Bank, IMF; UN founded 1945.
Unit 8: 1900–Present
Cold War and Decolonization
Bipolar US-Soviet rivalry (1947–91): containment, NATO (1949) vs Warsaw Pact (1955), Korean War (1950–53), Cuban Missile Crisis (1962), Vietnam War (1955–75), Soviet-Afghan War (1979–89). Decolonization: India and Pakistan (1947), Indonesia (1949), most of Africa (1957–75), Ghana (1957 first sub-Saharan), Algeria (1962). Nonaligned Movement (Bandung 1955). Mao's China: Great Leap Forward (1958–62, tens of millions of famine deaths), Cultural Revolution (1966–76). Iranian Revolution (1979).
Key Points
- Truman Doctrine (1947), Marshall Plan (1948), NSC-68 (1950).
- Mahatma Gandhi's satyagraha as a decolonization model.
- Apartheid in South Africa (1948–94); Mandela released 1990.
- Berlin Wall falls 1989; USSR dissolves December 1991.
Unit 9: 1900–Present
Globalization
Post-1991 globalization: WTO (1995), NAFTA (1994), EU consolidated by Maastricht (1993) and the euro (1999/2002). Containerization, internet, mobile phones, and offshoring reshaped trade and labor. China's WTO accession (2001) accelerated manufacturing migration. Environmental crises: ozone (Montreal Protocol 1987), climate change (Kyoto 1997, Paris 2015). Terrorism and counter-terrorism (9/11, 2001). 2008 global financial crisis. COVID-19 pandemic (2020–22). Rise of China and renewed great-power competition.
Key Points
- Multinational corporations as new economic actors.
- Migration: South-North flows, refugee crises (Syria 2015, Ukraine 2022).
- Pandemic disease: HIV/AIDS, SARS, COVID-19.
- Internet, social media, and information warfare.
6 Themes
The six CED themes
Every AP World question maps to at least one of these six themes. Use the abbreviations on the LEQ to demonstrate analytical framing.
Key Points
- ENV — Humans and the Environment: how environment shapes societies and societies shape environment.
- CDI — Cultural Developments and Interactions: religion, philosophy, science, art, ideas.
- GOV — Governance: empires, states, political organization, revolutions.
- ECN — Economic Systems: production, trade, labor, capitalism, socialism.
- SIO — Social Interactions and Organization: class, gender, race, family.
- TEC — Technology and Innovation: tools, infrastructure, industrial systems.
DBQ Rubric (7 pts)
Document-Based Question scoring
Same 7-point rubric as APUSH. You get 15 minutes reading + 45 minutes writing for one DBQ + one LEQ. Use at least four of the seven documents to support your argument, source at least two, and include one piece of outside evidence.
Key Points
- Thesis (1 pt): Defensible, addresses all parts of the prompt.
- Contextualization (1 pt): Broader historical context — what's happening before/around the prompt timeframe.
- Evidence — Documents (up to 2 pts): 3 documents = 1 pt; 4+ documents to support argument = 2 pts.
- Evidence — Outside (1 pt): One specific piece of historical evidence beyond the documents.
- Analysis — Sourcing (1 pt): For 2+ documents, explain how POV, purpose, situation, or audience matters.
- Analysis — Complexity (1 pt): Nuanced argument that corroborates, qualifies, or modifies.
LEQ Rubric (6 pts)
Long Essay Question scoring
Three LEQ choices — each anchored to a reasoning skill (causation, comparison, CCOT). Choose the one where you have the strongest specific evidence.
Key Points
- Thesis (1 pt): Defensible response to the prompt.
- Contextualization (1 pt): Broader historical context.
- Evidence (2 pts): 1 pt for two pieces of specific evidence; 2 pts when that evidence supports the argument.
- Analysis — Historical Reasoning (1 pt): Frame using the targeted reasoning process.
- Analysis — Complexity (1 pt): Nuance via qualification, corroboration, or modification.
CCOT Skill
Continuity and Change Over Time
CCOT is the signature skill of AP World History. It asks: across a period, what stayed the same, what changed, and why? A strong CCOT response avoids 'change-only' or 'continuity-only' analysis and explicitly addresses both, with specific evidence and causal reasoning.
Key Points
- Identify the period boundaries the prompt gives — don't drift outside them.
- Name 2-3 specific continuities AND 2-3 specific changes.
- Explain causes — political, economic, environmental, technological drivers.
- Compare with periodization: why is this the right time-slice? Defend or contest.
- Tie back to a CED theme (ENV, CDI, GOV, ECN, SIO, TEC).
Continue learning
Explore related MUN guides to deepen your skills.
20th Century Turning Points
Deep dives on WWI, WWII, decolonization, and the Cold War — high-yield for Units 7 and 8.
How to Study History
Source analysis, historiography, and study systems for any AP history exam.
AP US History (APUSH)
Period-by-period US history with DBQ/LEQ rubrics — pairs naturally with AP World.