AP World History Study Guide

Post-Classical Era (1200–1450) Study Guide

  • The Global Tapestry unit (1200–1450) examines six major regions and their developments.
    • East Asia
    • Dar al-Islam
    • South/Southeast Asia
    • The Americas
    • Africa
    • Europe

East Asia

  • Song Dynasty (960–1279):
    • Booming, commercialized economy.
      • Innovations in agriculture, manufacturing, and trade.
    • Confucian bureaucracy and Neo-Confucian beliefs continued.
    • New technologies spread.
      • Gunpowder
      • Movable type
      • Compass
  • Mongol invasions:
    • Attacked the Jin and Western Xia.
    • Toppled the Song by 1279.
    • Cause/effect:
      • Mongol conquest ended the Song and led to the Yuan Dynasty.
      • Later weakened Yuan rule and reinstated Ming.
  • East Asian kingdoms defended against or adapted to these incursions:
    • Korea
    • Vietnam
    • Japan

Dar al-Islam

  • In 1200, the Islamic world was politically fragmented.
    • The Abbasid Caliphate had declined.
    • New Turkic powers arose:
      • Seljuk Turks
      • Mamluk Sultanate
      • Ottomans
  • Trade networks linked Muslim lands.
    • Trans-Saharan routes
    • Indian Ocean routes
    • From West Africa to South Asia
  • Science and learning flourished.
    • Baghdad’s House of Wisdom
  • Islamic culture spread via merchants and missionaries.
  • Mongol invasions devastated Baghdad in 1258.
    • Created a short-lived Ilkhanate
    • Mongol rule helped unify much of Eurasia (Pax Mongolica).
    • Boosting trade and contact.
  • Ibn Battuta (1304–1368):
    • A Moroccan traveler
    • Traversed much of Dar al-Islam
    • Dubbed the “MVP of Unit 1”

South/Southeast Asia

  • This crossroads region was shaped by Indian Ocean trade and cultural exchange.
  • Hindu-Buddhist states coexisted with new Muslim sultanates.
    • Vijayanagara
    • Khmer Empire
    • Srivijaya
    • Majapahit
    • Delhi Sultanate
    • Coastal Islamic communities
  • Islam spread via trade and conquest (1200–1450).
    • South Asia
    • Maritime Southeast Asia
    • Syncretic cultures of Islam, Hinduism, and Buddhism
  • The region was influenced:
    • From the west by Islam
    • From the north by China
  • Continuity: Rich agrarian societies and temple economies remained important.

The Americas

  • The Americas were largely isolated from Eurasian networks.
  • Notable civilizations flourished independently:
    • Maya in Mesoamerica
    • Mexica (Aztec) in central Mexico
    • Inca in the Andes
    • Pueblo and Cahokia cultures
  • Major features included city-empires and agriculture.
    • Tenochtitlan (Aztec capital)
      • Chinampa “floating gardens” (intensive maize farming)
    • Inca engineering
      • Terrace farming
      • Road systems
      • Quipu record-keeping
  • Writing was rare.
    • Maya had a script.
    • Inca used quipu knots.
  • These societies had distinct political systems.
    • City-states, tribute empires
  • Developed unique technologies:
    • Calendar systems
    • Monumental architecture
  • Continuity: Complex state societies
  • Change: Regional warfare and trade in luxury goods within the Americas

Africa

  • Africa was becoming integrated into global trade by 1200.
  • West African empires thrived on the trans-Saharan gold–salt trade.
    • Ghana
    • Mali
    • Hausa states
  • Mansa Musa (r. c. 1312–1337) famously pilgrimed to Mecca.
    • Underscoring Islam’s importance in West African statecraft
  • Swahili city-states grew wealthy via Indian Ocean commerce.
    • Kilwa
    • Mogadishu
    • Great Zimbabwe
  • Islam spread into sub-Saharan Africa along these trade routes.
  • Continuity: Trade-driven state development
  • Change: Increasing Islamic cultural influence
  • Prince Henry’s Portuguese voyages (1415–1460) were beginning Africa’s Atlantic exploration, foreshadowing future change.

Europe

  • In 1200, Europe was still medieval/“Dark Age” in organization.
  • Society was dominated by feudalism.
    • Kings, lords, vassals, serfs
  • The Catholic Church and the Byzantine Empire were major institutions.
  • Northern Europe saw the Hanseatic League unite trading cities.
  • Europe’s key external contact in this era was the Crusades (1096–1270) in the Middle East.
  • Continuity: Decentralized, agrarian feudal society
  • Change: Later 14th c. crises – Black Death, Hundred Years War – weakened feudal order.

Networks of Exchange (1200–1450)

  • During 1200–1450, Afro-Eurasia’s trade networks expanded greatly.
  • Improvements in navigation, merchant institutions, and political stability (e.g., Pax Mongolica) fueled long-distance exchange.

Silk Roads (Land Routes)

  • Spanning from China to Europe
  • Moved silk, spices, porcelain, and luxury goods
  • Originating as a Han-era caravan route, it flourished under the Tang/Song and Mongols.
  • The Mongol conquests (13th c.) unified much of this route, greatly increasing trade and travel.
  • Merchants and Sogdians spread Buddhism and Nestorian Christianity.
  • Chinese technologies diffused west:
    • Paper-making
    • Gunpowder
    • Compass
    • The Battle of Talas saw papermaking reach Islam.
  • However, it carried the Bubonic Plague westward.
  • Trade relied on innovations:
    • Caravanserai
    • Banking (credit)
    • Paper money

Indian Ocean Trade

  • The richest trade network of this period was maritime in the Indian Ocean.
  • Monsoon wind patterns enabled regular sailing between East Africa, Arabia, India, Southeast Asia, and China.
  • This bulk trade carried timber, ivory, spices, coffee, textiles, and foodstuffs.
  • Major ports and polities grew wealthy:
    • Swahili city-states
    • Gujarat sultanate
    • Malacca
    • Srivijaya
  • Innovations improved navigation.
    • Asian dhows and Chinese junks
    • Lateen sail
    • Sternpost rudder
    • Astrolabe
  • Islam spread into coastal Asia via Muslim merchants and the 7th–10th c. wave of Indian Ocean trade.
  • Continuity: Peaceful, long-established network
  • Change: Rise of mercantile city-states
  • Key point: This sea lane was what later Europeans (e.g., Columbus) desperately sought to reach after 1450.

Trans-Saharan Trade

  • The Sahara’s trade routes linked West Africa to North Africa and the Mediterranean.
  • Using camel caravans with new saddles, merchants crossed the desert.
  • They traded West African gold (from Ghana and Mali) for North African salt, textiles, and goods.
  • This trade fostered diasporic merchant communities and spread Islam in West Africa.
  • Famous figures arose:
    • Mansa Musa of Mali (whose 1324 pilgrimage showcased Mali’s wealth)
    • Islamic scholars in Timbuktu
  • The Mamluk Sultanate in Egypt gained slaves and gold via these routes.
  • Continuity: Gold-salt trade since Ghana Empire
  • Change: New Islamic states like Mali emerging

Mongol Empire (Pax Mongolica)

  • The Mongols created the largest contiguous land empire ever, stretching from China to Eastern Europe.
  • Under Genghis Khan and his successors, they conquered:
    • Central Asia
    • Persia
    • China (Yuan Dynasty)
    • Kievan Rus’ (Golden Horde)
  • The Mongol unification temporarily made travel safer (“Pax Mongolica”), boosting Silk Road and other trade.
  • They implemented systems
    • Yam postal relay
    • Religious tolerance
  • However, conquest also caused destruction (Baghdad 1258) and helped spread the plague.
  • By 1450, the empire fragmented into khanates, but its legacy was extensive cultural exchange.
  • Continuity: Nomadic steppe tradition reshaped by empire
  • Change: Steppe empire to settled dynasties – e.g., Yuan in China, Ilkhanate in Persia
  • Note: Terms from this unit include Pax Mongolica, yurt, Yassa (Mongol code), etc.

Cultural Consequences of Trade

  • These networks caused massive cultural diffusion.
  • Religions spread:
    • Islam into South/Southeast Asia and sub-Saharan Africa
    • Buddhism into East Asia and parts of Central Asia
  • Technology and ideas diffused:
    • Chinese inventions reached Europe and the Middle East.
      • Papermaking
      • Gunpowder
      • Compass
    • The decimal system and algebra from the Islamic world reached East Asia.
  • Travelers recorded these exchanges:
    • Ibn Battuta
    • Marco Polo
    • Margery Kempe
  • Example: The 751 Battle of Talas led to papermaking knowledge passing from China to the Abbasids.
  • Literature and art blended styles:
    • Persian miniatures in China
    • Islamic architecture in Spain
  • In summary, expanded networks led to syncretism and diffusion across Afro-Eurasia.
  • Key continuities & changes:
    • Trade networks built on older routes but intensified with new tech.
    • Continuities include longstanding caravan routes and the spread of world religions.
    • Changes over time:
      • States like Mali and the Mongol khanates rose
      • New crops and technologies spread
      • Europe transitioned from feudal isolation toward global exploration
  • Cause-effect highlights include:
    • Mongol conquests caused greater integration of Eurasia (and the plague’s spread)
    • New ship tech and monsoon knowledge caused booming Indian Ocean trade
    • African kingdoms’ wealth caused pilgrimage and diplomatic contacts (Mansa Musa)
  • Mnemonic/Exam Tips from Freemanpedia:
    • Focus on feudalism in medieval Europe
    • Remember that Ibn Battuta is the “MVP of Unit 1” and Mansa Musa the “MVP of Unit 2”
    • Know major trade cities and the significance of the House of Wisdom and caravanserai.
    • Think of the “Three Travelers”: Battuta, Polo, Kempe, who exemplify 1200–1450 connections.

Unit 3: Land-Based Empires (1450–1750)

  • Major land-based empires dominated Afro-Eurasia in 1450–1750.
  • The Ottoman, Safavid, and Mughal “gunpowder empires” each relied on large armies armed with muskets and cannons to expand rapidly.
  • For example, the Ottomans conquered Constantinople (1453) with massive cannons and ruled a Sunni Islamic empire spanning Anatolia, the Balkans, and the Middle East.
  • The Safavids (1501–1722) founded a new Shi’a Muslim state in Persia (Iran) under Shah Ismail I.
  • Wedged between the Ottoman (Sunni) and Mughal (Sunni) empires, the Shi’a Safavids used religion as state ideology and constantly clashed with the Ottomans (often losing).
  • The Mughal Empire (1526–1857) in South Asia conquered northern India under Babur (1526) and reached its height under Akbar the Great (r.1556–1605).
  • Akbar’s regime is famous for religious tolerance (earning him fame in Europe) and for ruling a Muslim minority over a vast Hindu majority, using a land-revenue system of zamindars to tax agriculture.
  • The Mughals built monumental architecture (e.g., the Taj Mahal) and even saw the rise of Sikhism.

Ottoman Empire (c.1299–1923)

  • Founded by Osman, expanded through Anatolia into the Balkans and Middle East; conquered Constantinople in 1453, made it Istanbul.
  • Employed the devshirme/Janissary system and a millet (religious community) system to govern diverse peoples.
  • Under Suleiman I (“the Magnificent”) the empire codified law and expanded to its apex.
  • Decline began in the late 17th c., but Ottomans lasted until 1919.

Safavid Empire (1501–1722)

  • Founded by Shah Ismail I in Persia, establishing Twelver Shi’a Islam as state religion.
  • As Freemanpedia notes, everything about the Safavids “revolves around” their Shi’ism and rivalry with the Sunni Ottoman Empire.
  • Under Shah Abbas I (r.1588–1629) they reformed the military and made Isfahan a cultural capital.
  • Exam tip: Focus on the Safavids’ Shi’a identity and perpetual wars with Ottomans (think of them as the “Shi’a little brother” to the Sunni Ottomans).
  • Masjid-i Shah (Imam Mosque) in Isfahan (Safavid Persia, 17th c.) illustrates Safavid architectural achievement.
  • The Safavids built grand mosques and squares (e.g., Naqsh-e Jahan), using Shi’a Islam as state ideology while competing with Ottoman Sunni power.

Mughal Empire (1526–1857)

  • Established by Babur’s defeat of Delhi Sultanate, it quickly became extremely wealthy and populous.
  • Akbar the Great (r.1556–1605) is famed for religious tolerance (he abolished the jizya tax and employed Hindus in administration).
  • The Mughal state relied on zamindars (landholding tax collectors) to funnel revenue.
  • They introduced new synthesis:
    • The Urdu language, a blend of Persian and local tongues
    • Saw the birth of Sikhism.
  • The empire persisted into the 19th century (nominally until 1857 under British rule).

Other Asian Empires

  • Manchu (Qing) China
    • In 1644 the Manchus conquered China and founded the Qing Dynasty.
    • Though ethnically non-Chinese, the Qing adopted Confucian bureaucracy and ruled at a high point under Kangxi and Qianlong.
    • (Freemanpedia notes the Manchus “quickly merged into Chinese life” and produced some of China’s greatest emperors.)
    • They continued traditional imperial systems until the 20th c.
  • Tokugawa Japan (1603–1868)
    • The shogunate unified Japan under Tokugawa Ieyasu, building Edo (Tokyo) Castle and creating a centralized feudal state.
    • From about 1630 Japan adopted sakoku (national isolation), severely restricting foreign trade (Dutch at Nagasaki only) and banning Christianity.
    • (Freemanpedia quips Tokugawa “institutes Sakoku (locked country)” and “allows trade… only to the Dutch” .)
    • Tokugawa rule lasted until 1868.

African Empire

  • Songhai Empire (c.1464–1591)
    • West African state that eclipsed Mali in size and wealth.
    • It controlled trans-Saharan trade in gold and salt from its cities Gao and Timbuktu.
    • Songhai was Muslim but relied on traditional African structures; it fell to a Moroccan invasion in 1591.

Pre-Columbian Americas

  • Aztec and Inca Empires
    • The two largest American empires at European arrival.
    • The Aztec Empire (Central Mexico) was centered on Tenochtitlan and is infamous for ritual human sacrifice.
    • The Inca Empire (Andes South America) was even larger at contact: a highly organized Andean state (capital Cuzco) practicing terrace farming and imperial administration.
    • Both had only existed a few decades to a century before Spanish conquest; Cortés toppled the Aztecs (1521) and Pizarro conquered the Incas (1533).

Continuities & Change

  • All these land empires shared continuities (imperial bureaucracy, agrarian taxes, patronage of religion and arts) but also changes.
  • For example, the introduction of gunpowder weapons enabled rapid conquest (Ottomans took Constantinople with cannons) – a change from pre-1450 armies.
  • In religion, Sunni-Shi’a conflicts shaped Ottoman–Safavid rivalry.
  • The Manchu conquest of China (a new dynasty supplanting the Ming) exemplifies a change of ruling peoples, though continuity in Chinese culture.
  • By 1750 many empires still stood strong:
    • Mughal Empire (1857)
    • Tokugawa Japan (1868)
    • Qing China (1912)
    • Ottoman Empire (1919)
    • All continued well into the 19th–20th centuries, showing continuity of imperial structures beyond the early modern era.

Unit 4: Transoceanic Interconnections (1450–1750)

  • Transoceanic voyages 1450–1750 opened global exchange networks.
  • Europeans applied centuries of accumulated navigational knowledge (from Greeks, Arabs, Chinese, etc.) to sail the oceans.
  • Improved ships (the caravel and carrack), the magnetic compass, astrolabe, and better cartography enabled longer voyages.
  • Motivated by trade (spices, silk) and empire-building, Portuguese and Spanish explorers spearheaded the Age of Discovery.
  • For instance, Portugal’s Vasco da Gama reached India by sea in 1498, and Columbus “found” the Americas in 1492 (unbeknownst to native peoples).
  • States like Spain and Portugal divided the globe (Treaty of Tordesillas, 1494) and set up trading posts and colonies worldwide.
  • As Freemanpedia emphasizes, these colonial empires were built on existing trade networks, from Atlantic routes to the Indian Ocean.

Technological Foundations

  • Europe’s voyages relied on an “amalgamation” of prior technologies.
  • Key innovations included:
    • Caravel (a fast, maneuverable ship with lateen sails)
    • Carrack (larger ocean-going ship)
    • Magnetic compass (Chinese origin)
    • Astrolabe/sextant (for determining latitude).
  • These let Europeans cross the Atlantic and navigate around Africa.
  • European monarchs sponsored state-funded exploration; for example, Prince Henry the Navigator (Portugal) established a school for navigation, kickstarting Atlantic expansion.

Columbian Exchange

  • When the Old and New Worlds collided, plants, animals, and diseases flowed between hemispheres.
  • American foods became global staples:
    • Potatoes
    • Maize (corn)
    • Cassava
    • Spread to Europe, Asia, and Africa, boosting world populations.
  • Cash crops from the Americas were grown on plantations and shipped mainly to Europe.
    • Sugar
    • Tobacco
  • Europeans and Africans brought:
    • Livestock (horses, cattle, pigs)
    • Staples (wheat, rice)
    • Old‐world diseases decimated indigenous American
  • Populations (up to 90% loss in some areas), a demographic collapse that reshaped societies
  • Overall, “the two parts of the globe that had been separated for millennia finally became connected” .

European Colonial Empires

  • By 1750 the “Big Five” maritime empires had established global reach.
  • Spain (the earliest colonial power)
    • Conquered the Aztec and Inca Empires
    • Created viceroyalties in the Americas and Philippines.
    • Spanish rule:
      • Imposed Christianity
      • The encomienda system (forced labor of natives)
      • Mined vast silver (Potosí) for Europe.
  • Portugal
    • Built a world-spanning trade empire
      • From Brazil to Africa to India
    • Controlling the spice trade via forts (Goa, Malacca)
    • Colonizing Brazil.
  • France held smaller colonies.
    • New France in Canada
    • Caribbean islands like Saint-Domingue
    • Trading posts in India
  • The Netherlands (Dutch) focused exclusively on trade.
    • Dutch East India Company (VOC) dominated:
      • Spice Islands
      • Indonesia
      • Cape Colony
    • They even monopolized trade with Japan (Dejima).
  • Britain, emerging in the 17th c.
    • Established colonies in North America (13 colonies, Caribbean)
    • Founded the British East India Company in India.
    • (Freemanpedia notes the British Empire was still in its first wave by 1750, soon to expand enormously.)

Trade Networks & Economy

  • Colonies and trade formed a truly world economy.
  • The Atlantic System connected Europe, Africa, and the Americas.
    • Europeans shipped manufactured goods to Africa.
      • Textiles
      • Guns
      • Rum
    • African slave ships crossed the Middle Passage to deliver millions of enslaved people to American plantations.
    • Plantation products flowed back to Europe.
      • Sugar
      • Tobacco
      • Cotton
    • While, the Indian Ocean trade network continued thriving:
      • Asian ports linked spices, silks, and silver across Asia. European chartered companies held trade monopolies in Asia.
    • Diagram of the Atlantic System showing:
      • Manufactured goods shipped from Europe to Africa
      • enslaved Africans transported to the Americas.
      • Plantation products shipped from the Americas to Europe.
  • European chartered companies held trade monopolies in Asia, following mercantilist policies (wealth measured in bullion, exclusive colonial trade).

Labor Systems & Social Change

  • New labor systems arose to support colonial economies. Plantation boom “increased the demand for slaves in the Americas”.
    • Encomiendas, haciendas
    • Coercing Native Americans and (later) African slaves to work plantations and mines.
  • The trans-Atlantic slave trade forcibly brought millions of Africans to the New World, creating an African diaspora and deeply altering African societies
  • Colonial societies also saw new social hierarchies.
    • Europeans atop elites.
    • Mixed-race (mestizo, mulatto) populations.
    • enslaved Africans at the bottom.

Continuities & Effects

  • Unit 4’s changes were global.
  • Foods and goods redistributed worldwide
    • Potatoes to Ireland
    • Maize to China
    • Populations in Afro-Eurasia benefited nutritionally from the increased diversity of American food crops”.
    • European colonization often “affected the environment through deforestation and soil depletion” .
  • New Atlantic and Indian Ocean trade linked continents in unprecedented ways.
  • European settlement “expanded the spread of existing religions and contributed to religious conflicts and syncretism”
  • By 1750, these transoceanic interactions had created a truly interconnected world, with empires, economies, and cultures intertwined across oceans. AP Exam Tip: “OTECE” for Columbian Exchange flows to Americas).

AP Exam Tips

  • Remember key definitions and concepts from Freemanpedia: Chattel slavery and encomienda (Spanish forced labor grant) are new labor systems.
  • Focus on cause-effect (silver flowed from Americas to Europe and Asia, fueling trade and inflation) and continuity

Unit 5: Revolutions (1750–1900)

  • The Enlightenment (18th century) laid the intellectual foundations for revolution. Thinkers applied “reason” to government and natural rights.
  • The American Revolution (1775–1783) was “built on the Enlightenment”, as colonists enshrined concepts in Declaration of Independence and U.S. Constitution.

American Revolution

  • First successful New World revolt.

  • Colonists declared independence in 1776.

  • They established a republic grounded in natural rights, inspiring later rebels.

French Revolution (1789–1799)

  • Overthrew France’s ancien régime.

  • France moved from absolute monarchy to republic to Napoleon’s empire.

  • Enlightenment ideals and the American example spurred the revolt.

  • Storming of the Bastille (1789), the Reign of Terror.

  • Outcomes included abolition of feudal privileges and eventual rise of Napoleon.

Haitian Revolution (1791–1804)

  • Enlightenment inspired enslaved and free Blacks in the French colony.

  • They overthrew colonial rule and abolished slavery.

  • Haiti became the first Black republic, gaining independence from France.

  • Toussaint L’Ouverture led early successes; by 1804, France lost its richest colony.

Latin American Revolutions (1810s–1820s)

  • Creole elites in Spanish and Portuguese America rebelled.

  • They were inspired by the American and French revolutions.

  • Simón Bolívar and José de San Martín led movements in South America.

  • By the 1820s Spain and Portugal lost most of their mainland colonies.

  • Creole armies secured independence for Mexico, Venezuela, Argentina, Brazil, etc.

  • The Monroe Doctrine (1823) warned Europe off Latin American colonies.

Nationalism and 19th-Century Europe

  • Revolutionary nationalism emerged.

  • Napoleon’s conquests spread the Napoleonic Code and stirred national pride.

  • After 1815 conservatives tried to restore old regimes, but liberal and nationalist movements grew.

  • By the 1860s–70s, unification movements succeeded in central Europe:
    Italy, Cavour and Garibaldi united Italian states; in Germany, Bismarck of Prussia achieved unification through “blood and iron” wars and victory in the Franco-Prussian War (1870).

Comparisons & Conclusions

  • Enlightenment ideas (e.g. natural rights) remained central from the American through Latin American revolutions. All Atlantic revolutions rejected absolutism.

  • Nationalism was a new force: unlike the previous era’s dynastic loyalties, 19th-century peoples sought self-determination by culture and language.

Unit 6: Consequences of Industrialization (1750–1900)

  • Industrial Revolution in Britain coal and iron enabled steam engines and machines.

  • Industrial output exploded with inventions like:
    Whitney’s cotton gin, Watt’s steam engine etc..

Economic Impacts

  • Medical advances and better food led to a dramatic population increase.

  • Industrialization improved average living standards but produced pollution and environmental strain.

  • Oil and coal fueled factories and ships, altering land use and raising emissions.

Labor and Social

  • Factory conditions were often abysmal (long hours, injuries, child labor).

  • Slavery was affected: the U.S. cotton gin increased demand for slave-picked cotton, delaying emancipation.

Economic Theories

  • Capitalism (free-market economics) became dominant.

  • Capitalism expanded alongside industry and colonial trade, creating wealth for entrepreneurs but also wide inequality.

  • In response, socialist and communist ideas arose.

Global Capitalism (Industrial Capitalism)

  • Industrial powers dominated global trade, seeking materials and markets everywhere.

  • Colonies and semi-colonies supplied raw materials and bought European goods.

Imperialism (New Imperialism)

  • Fueled by industrial might, Western states built large empires after 1870.

  • Economically, they needed resources and consumers . Ideologically, doctrines like the “White Man’s Burden” and Darwinism were used to justify conquest.

Forms of Control

  • Economic imperialism emerged too: powerful countries dominated a weaker country’s economy without formal annexation.

  • For example, European bankers and planters controlled the Ottoman Empire’s debts

Indigenous Responses

  • Colonized people often resisted, but most armies lacked modern weapons and coordination.

  • A few successes occurred like:
    Ethiopia (under Menelik II) defeated Italy at Adowa (1896) to remain independent, and Japan’s Meiji Restoration rapidly modernized so it could itself resist imperialism.

Migration

  • The Industrial Age spurred mass migration.

  • Millions of Europeans emigrated and millions of Asians migrated as indentured laborers or trade migrants.

  • As a result, formerly homogenous societies became multicultural.

Effects of Migration

  • Receiving societies saw new labor forces and cultural diversity.

  • In the migrants’ home regions, emigrants sent remittances, but also experienced “brain drain” or labor shortages.

Environment and Demography

  • Industrialization and migration transformed the environment. Cities grew rapidly, leading to overcrowding and pollution.

  • As a result, the world by 1900 faced new challenges like slums, epidemics, and environmental degradation.
    Comparisons and Conclusions

Comparisons and CCOT

  • Across Unit 6, continuity can be seen in the pursuit of profit and power: industrialists and states intensified patterns of exploitation begun earlier.

Unit 7: Global Conflicts (1900–1945)

  • Revolutions in Mexico, Russia and China challenged old regimes. These shifting power dynamics were driven by popular uprisings and nationalist unrest.

World War I (1914–1918) – Causes:

  • A tangled web of alliances and rivalries led to war. The spark was the assassination of Archduke Franz Ferdinand (1914).
    Underlying causes included imperial competition, militarism, and rising nationalism.

Interwar Economy – Great Depression:

  • The 1930s saw a worldwide depression with Responses:
    USSR expanded state planning. the U.S. implemented New Deal Keynesian programs; fascist governments in Italy/Germany used state-run militarized economies.

Unresolved Tensions (1918–1939)

  • Post‑WWI treaties left “unresolved tensions” with Germany humiliated Colonial subjects seeking self rule, and Russia/China were consumed by civil wars.

Mass Atrocities (Genocide)

  • Mass killings happened because of state policy/doctrine:
    Armenian/Ukrainian/Holocaust.

CCOT & Themes

  • Power struggles/ethnic tensions of the 19th continued in 1900-1945 but the collapse of old empires (Ottoman, Austro-Hungarian, Qing) was a major change from nationalism and imperialism of 19th which yielded to global ideological conflicts by 1945.

Unit 8: Cold War & Decolonization (1945–1980s)

  • The collapse of Euro empires and the division of the world into U.S. and Soviet spheres defined the post-1945 era. Decolonization created dozens of new nations while Cold War tensions led to global conflict.

The Cold War (1945–1991)

  • U.S. containment policy opposed Soviet expansion, prompting confrontation. Freeman advises focusing on the causes of the Cold War and the three power groups.

Cold War Effects

  • Defining features were nuclear proliferation and proxy wars with USA/USSR/China having Hydrogen Bombs
    Simultaneously, conflicts erupted in Korea /Vietnam /Afghanistan /Latin America as local struggles funded by USA/USSR.

Spread of Communism

  • By 1949 China joined the communist bloc, transforming world balance. Mao Revolution was huge due to land reform (estates to peasants).

Decolonization

  • Colonies in Asia and Africa got independence from peaceful movements in India/Ghana other wars of liberation in Algeria Vietnam others had violent wars

End of the Cold War

  • The ruinous
    Afghan war drained Soviet resources. rigid planned economies lagged and the economic peak was in 1960 with Gorbachev loosening controls as USSR got dissolved.

Continuities/Changes:

  • Nationalist and ideological conflicts were a through-line from the World Wars to the Cold War and change was the shift of global power.

Unit 9: Globalization (1980s–Present)

  • The technological, economic, cultural, environmental, and institutional changes that were key points of the spread of this technology and affects it had on the different societies.

Technological Advances

  • Communications + Travel + Internet are all tech booms and agriculture and energy improvements were huge.

Diseases and Medicine

  • Globalization means pandemics spread rapidly. The College Board asks students to categorize major diseases/outbreaks and human responses.

Environment

  • Topics: deforestation deserts ,pollution. The cause and effect is the green house emissions ( linked the human activities to climate- the stakes were framed starkly: “If you fail? Everything dies.”

Global Economy

  • Since 1980, most countries shifted toward free-market policies. With MNC's Toyota Nestlé Mahindra and global brands( CokeAmazon that expanded

Global Culture:

  • Connectivity grew and so did culture as Social media platforms (Facebook, Twitter, Weibo) and global news (BBC, CNN) spread ideas instantly