Unit 4
12–15% of examc. 1450–1750
European exploration and colonization created new transoceanic connections from 1450 to 1750. The Columbian Exchange transformed ecosystems, economies, and populations on both sides of the Atlantic. Maritime empires established colonial systems, the Atlantic slave trade forcibly relocated millions of Africans, and mercantilist policies reshaped the global economy.
Unit Overview
Advances in navigation and ship design, including caravels, lateen sails, compasses, and astrolabes, made sustained oceanic voyages possible. Better cartography and wider knowledge-sharing helped states and merchants coordinate long-distance exploration.
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Video lessons
Podcast recaps
Technological Innovations from 1450 to 1750
European rulers and merchants pursued new maritime routes for profit, state power, and religious expansion. Voyages led by Portugal and Spain connected the Atlantic, Indian, and Pacific worlds and reshaped global exchange.
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Video lessons
Podcast recaps
Exploration: Causes and Events from 1450 to 1750
The Columbian Exchange moved crops, animals, diseases, people, and ideas between Afro-Eurasia and the Americas. It increased long-term global population growth but caused devastating demographic collapse among Indigenous Americans through epidemic disease.
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Video lessons
Podcast recaps
Columbian Exchange
Spain and Portugal built early maritime empires through conquest and strategic control of ports, while the Dutch, English, and French expanded their own imperial systems. Mercantilist policy linked colonies to imperial economies and intensified naval competition.
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Video lessons
Podcast recaps
Maritime Empires Established
Empires maintained colonial rule through administrative structures and labor systems such as viceroyalties, encomienda, hacienda, and coerced plantation labor. Mining and cash-crop production integrated colonial regions into expanding global markets.
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Podcast recaps
Maritime Empires Maintained and Developed
Maritime empires faced resistance from colonized peoples, enslaved populations, and rival states. Uprisings and local resistance movements exposed limits of imperial authority and forced shifts in military and governance strategies.
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Podcast recaps
Internal and External Challenges to State Power from 1450 to 1750
Colonial societies developed layered social hierarchies based on ethnicity, race, and legal status. New mixed communities and caste-like systems shaped political rights, labor access, and social mobility across the Atlantic world.
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Changing Social Hierarchies from 1450 to 1750
Global economic systems transformed through silver flows, plantation expansion, and intercontinental trade networks. At the same time, older regional practices persisted, producing a mix of continuity and major structural change.
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Video lessons
Podcast recaps
Continuity and Change from 1450 to 1750
Grouped by format. Open one and work a few at a time.
Multiple choice
About one minute on the real exam.
Which development most directly increased European ability to dominate trade routes after 1450?
Multiple choice
About one minute on the real exam.
The Treaty of Tordesillas primarily:
Multiple choice
About one minute on the real exam.
Which innovation most directly improved open-ocean navigation?
Multiple choice
About one minute on the real exam.
The Columbian Exchange resulted in:
Multiple choice
About one minute on the real exam.
Which crop from the Americas most directly increased European population growth?
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Turn this unit into a quick 30-minute session.