AP World History Unit 4

Transoceanic Interconnections (c. 1450–1750)
Jan van der Crabben
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This collection collates articles, definitions, and maps covering the voyages, empires, and exchanges related to Unit 4: Transoceanic Interconnections of the AP® World History: Modern curriculum. It offers an overview for teachers, providing the materials needed to explore how the linking of the Eastern and Western Hemispheres transformed economies, populations, and societies across the globe.

⬇️ Scroll down to see the collection!

Ideas for Teachers

  • Technological transmission: Ask students to read the Caravel and Carrack articles and then identify which features of their respective designs came from contact with other maritime cultures, including the lateen sail borrowed from the Arab dhow.
  • Navigation with winds & currents: Show students both of the Four Voyages of Columbus maps (side by side). Have them use the trade winds and currents on the wider map to explain why his outbound and return routes differed so sharply.
  • Primary source evidence: Have students read the Columbian Exchange article and ask them to list the evidence the author uses to support claims about the movement of crops, animals, and disease between Europe and the New World.
  • Follow the silver: Using the Manila Galleon article, ask students to trace the flow of American silver from the mines to Manila to China. Then discuss in groups how & why Chinese demand for silver shaped a trade route across the Pacific.
  • Eyewitness account: Assign reading of Olaudah Equiano's Account of the Middle Passage and ask your students to identify Equiano's point of view, purpose, historical situation, and the intended audience of his account.
  • Compare two empires: Put the Portuguese, Dutch, and Spanish empire maps side by side. Ask your students to work out which powers focused on creating networks of trade posts and which empires built territorial colonies. Explore the benefits and downsides of both approaches.

Browse the collection below to find materials that fit your teaching style and feel free to adapt them to your students. Note that our articles are print-friendly, and there is a PDF export button on each article page.

Articles & Definitions

Caravel
Definition

Caravel

The caravel (caravela in Spanish and Portuguese), was a type of medium-sized ship which, with its low draught and lateen or triangular...
Carrack
Definition

Carrack

The carrack (nao in Spanish, nau in Portuguese, and nef in French) was a type of large sailing vessel used for exploration, to carry...
Prince Henry the Navigator
Definition

Prince Henry the Navigator

Prince Henry the Navigator (aka Infante Dom Henrique, 1394-1460) was a Portuguese prince who famously helped capture the...
Christopher Columbus
Definition

Christopher Columbus

Christopher Columbus (l. 1451-1506 CE, also known as Cristoffa Corombo in Ligurian and Cristoforo Colombo in Italian) was...
Vasco da Gama
Definition

Vasco da Gama

Vasco da Gama (c. 1469-1524) was a Portuguese navigator who, in 1497-9, sailed around the Cape of Good Hope in southern Africa and...
Ferdinand Magellan
Definition

Ferdinand Magellan

Ferdinand Magellan, or Fernão de Magalhães (c. 1480-1521), was a Portuguese mariner whose expedition was the first to circumnavigate...
Henry Hudson
Definition

Henry Hudson

Henry Hudson (c. 1570-1611) was an English navigator and maritime explorer. He is known for his four voyages between 1607 and 1610...
The Spice Trade & the Age of Exploration
Article

The Spice Trade & the Age of Exploration

One of the major motivating factors in the European Age of Exploration was the search for direct access to...
Columbian Exchange
Definition

Columbian Exchange

The Columbian exchange is a term coined by Alfred Crosby Jr. in 1972 that is traditionally defined as the transfer of plants...
Cortés & the Fall of the Aztec Empire
Article

Cortés & the Fall of the Aztec Empire

The Aztec empire flourished between c. 1345 and 1521 CE and dominated ancient Mesoamerica. This young and warlike...
Portuguese Empire
Definition

Portuguese Empire

The Portuguese Empire was established from the 15th century and eventually stretched from the Americas to Japan. Very often a...
Portuguese Goa
Definition

Portuguese Goa

Goa, located on the west coast of India, was a Portuguese colony from 1510 to 1961. The small coastal area was conquered by Afonso...
Dutch East India Company
Definition

Dutch East India Company

The Dutch East India Company (VOC) was formed in 1602 by the Staten-Generaal (States General) of the then Republic of the...
East India Company
Definition

East India Company

The English East India Company (EIC or EEIC), later to become the British East India Company, was founded in 1600 as a trading...
Indian Ocean Trade before the European Conquest
Article

Indian Ocean Trade before the European Conquest

Finding a maritime route to the East and gaining access to the lucrative spice trade stood at the root...
Tokugawa Iemitsu
Definition

Tokugawa Iemitsu

Tokugawa Iemitsu (1604-1651) governed Japan as the third shogun of the Edo period. He implemented a number of important policies...
Colonial Government in the Spanish Empire
Article

Colonial Government in the Spanish Empire

The apparatus of colonial government in the Spanish Empire consisted of multiple levels, starting with the...
Encomienda
Definition

Encomienda

The encomienda was a system where Spanish adventurers and settlers were granted the legal right to extract forced labour from indigenous...
Kingdom of Kongo
Definition

Kingdom of Kongo

The Kingdom of Kongo (14-19th century CE) was located on the western coast of central Africa in modern-day DR of Congo and Angola...
Manila Galleon
Definition

Manila Galleon

The Manila galleons were Spanish treasure ships which transported precious goods like silk, spices, and porcelain from Manila in...
Sugar & the Rise of the Plantation System
Article

Sugar & the Rise of the Plantation System

From a humble beginning as a sweet treat grown in gardens, sugar cane cultivation became an economic powerhouse...
Transatlantic Slave Trade
Definition

Transatlantic Slave Trade - The Shame of Nations

The transatlantic slave trade (also given as the Atlantic slave trade, circa 1492 to 1860) was the practice...
Olaudah Equiano's Account of the Middle Passage
Article

Olaudah Equiano's Account of the Middle Passage

Olaudah Equiano (l. c. 1745-1797, also known as Gustavus Vassa) was an African of the Igbo village of...
King Philip's War
Definition

King Philip's War

King Philip’s War (also known as Metacom’s War, 1675-1678) was a conflict in New England between a coalition of Native American...

Maps & Infographics

Map of the World According to Christopher Columbus c. 1490
Image

Map of the World According to Christopher Columbus c. 1490

This map reflects Christopher Columbus’s (c. 1451-1506) geographical assumptions prior to his...
Map of the Four Voyages of Christopher Columbus, 1492–1504
Image

Map of the Four Voyages of Christopher Columbus, 1492–1504 - Routes, Landfalls & Colonial Expansion in the Americas

Christopher Columbus (c. 1451–1506) led four transatlantic...
Map of the Four Voyages of Christopher Columbus, 1492 - 1504
Image

Map of the Four Voyages of Christopher Columbus, 1492 - 1504

This map illustrates the four voyages of Christopher Columbus between 1492 and 1504, commissioned...
Map of the Magellan–Elcano Voyage, 1519–1522
Image

Map of the Magellan–Elcano Voyage, 1519–1522 - The First Recorded Circumnavigation of the World

A map of the Magellan–Elcano expedition (1519–1522), a Spanish-sponsored...
Map of the Portuguese Commercial Empire, c. 1580
Image

Map of the Portuguese Commercial Empire, c. 1580 - Fortified Ports, Maritime Trade Routes, and Global Sea Power

Portugal established the first and longest-lasting...
Map of the Spanish Empire and the Indies (c. 1500-1820)
Image

Map of the Spanish Empire and the Indies (c. 1500-1820)

The emergence of Spain as a global imperial power began with the dynastic union of the crowns...
Map of the Dutch Commercial Empire, c. 1665
Image

Map of the Dutch Commercial Empire, c. 1665 - A Global Network of Commerce, Exploration and Maritime Power

A map of the Dutch commercial empire which reached its...
Map of European Expansion and Global Trade Empires, c.1700
Image

Map of European Expansion and Global Trade Empires, c.1700

By the 18th century, European power had become truly global through a combination of maritime...
Map of the European Colonization of North America, 1492–1750
Image

Map of the European Colonization of North America, 1492–1750 - Voyages, Claims, Settlements & Imperial Rivalries

European colonization in North America developed gradually...
Map of Spanish Conquest in Northern South America
Image

Map of Spanish Conquest in Northern South America - Andes, Amazon & Caribbean Expeditions, 1499–1561

Spain’s rapid expansion into South America followed the consolidation...
Map of the Trade in the Indian Ocean 15th-16th century
Image

Map of the Trade in the Indian Ocean 15th-16th century - From Afro-Asian Exchange to European Intervention

The Indian Ocean trade network of the 15th and 16th centuries...
The Columbian Exchange
Image

The Columbian Exchange - Global Connections and Consequences after 1492

The Columbian Exchange (from 1492 CE) refers to the large-scale transfer of plants...
Transatlantic Triangular Trade Map
Image

Transatlantic Triangular Trade Map

Map showing the flow of goods and enslaved people across the Atlantic between Europe, Africa and America in the...
Map of  the African Slave Trade Networks, c. 1750
Image

Map of the African Slave Trade Networks, c. 1750 - Atlantic, Trans-Saharan, Red Sea & Indian Ocean Routes

By c. 1750, the slave trades affecting Africa were entering...
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