AMSCO 4.4 Maritime Empires Link Regions Notes

Overview

AMSCO Topic 4.4, "Maritime Empires Link Regions" (AMSCO p. 218 - p. 231), explains how European states built maritime empires between 1450 and 1750 and what economic and labor systems kept those empires running. Driven by political, religious, and economic rivalries, the Portuguese, Spanish, Dutch, French, and British set up trading posts in Africa and Asia and full colonies in the Americas. The chapter also tracks the labor systems behind colonial profits, including the encomienda, hacienda, mit'a, indentured servitude, and chattel slavery, plus the devastating growth of the Atlantic slave trade. This builds directly on the exploration covered in AMSCO 4.2 and the biological exchange in AMSCO 4.3.

Timeline of conquests of European powers and establishment of maritime empires

Trading Posts in Africa and Asia

European empires in Africa and Asia started small: armed trading posts on the coasts, not full takeovers of the interior. Prince Henry the Navigator financed Portuguese expeditions along Africa's Atlantic coast and around the Cape of Good Hope, so Portugal got there first.

• With the cooperation of local rulers, Portuguese (then other European) traders set up posts along Africa's coasts. Some rulers traded enslaved people for gunpowder and cannons, gaining a military edge over neighboring villages.
• The Kingdom of Dahomey grew stronger by raiding other villages for captives to sell to European merchants.
• Maritime trade actually strengthened some African states. The Asante Empire and the Kingdom of the Kongo grew in influence through their participation in trade networks. Benin artisans even incorporated images of the European "intruder" into 16th-century carvings.
• In East Africa, Vasco da Gama invaded the Swahili city-states in 1498. The Portuguese took over trade in Kilwa, Mombasa, and other commercial centers with heavily armed ships and fortresses, throwing the region into decline.

Japan and China Push Back

Not every state welcomed European trade. Some Asian states deliberately restricted it to limit disruptive economic and cultural effects.

• Japan initially tolerated Portuguese and Dutch traders and missionaries, and thousands of Japanese converted to Christianity. After some Christians destroyed Buddhist shrines, the government banned Christian worship in 1587. By the 1630s Japan had expelled nearly all foreigners, banned most foreign books, and prohibited Japanese people from traveling abroad. Only a few Dutch merchants remained, secluded on a small island in Nagasaki harbor, plus limited trade with China.
• China's Ming Dynasty, after Zheng He's voyages, prohibited private foreign trade, destroyed some dockyards, limited ship sizes, and rebuilt the Great Wall. This was part of a broader conservative turn to undo Mongol Yuan influence, reemphasizing Confucianism and the traditional exam system. Many trade limits were later reversed, and China stayed central to global trade.

European Rivalries on Five Continents

European rivalries (political, economic, and religious) shaped where empires expanded. India is the clearest example, with three powers holding posts at once.

• The British East India Company (EIC) began a commercial relationship with the Mughal Empire in the 17th century.
• Portugal controlled the coastal post of Goa; France controlled Pondicherry.
• In the Seven Years' War, France and Britain competed on five continents. Britain's 1763 victory drove the French out of India.

The EIC started as small coastal forts focused purely on trade profit, limited by Mughal power. It then expanded by exploiting Muslim-Hindu tensions, signing treaties with local rulers, and using European-trained Indian soldiers called sepoys to move inland. Eventually Britain controlled much of the subcontinent. Each British trading post in Africa, India, and elsewhere became a node, a trade center connecting goods from many parts of the world, paving the way for globalization. In West Africa, though, the Asante Empire limited British impact.

Conquest in the Americas

The Americas went differently. Instead of trading posts, Europeans built settler colonies, and disease did much of the conquering.

• The Aztec and Inca empires each had 10 to 15 million people before European arrival. European diseases caused populations to plummet, and both empires collapsed quickly under Spanish attack.
• Cortés, helped by groups the Aztecs had conquered, overthrew the Aztec by 1521 and established New Spain. The Spanish destroyed Tenochtitlán and built Mexico City on its ruins.
• Pizarro captured the Inca ruler Atahualpa, demanded a room filled with gold for his release, took the gold, and killed him anyway in 1533. The conquest of the Inca was complete by 1572.
• The Treaty of Tordesillas (1494) split the Americas between Spain and Portugal along a meridian through eastern South America. Portugal got Brazil; Spain claimed the rest.
• Spain also pushed into North America. Pedro Menéndez de Avilés founded St. Augustine, Florida in 1565, the oldest continuous settlement in what became the United States.
• France and Britain fought over North America too. The British allied with the Iroquois against French trade interests, but the Iroquois later signed the Great Peace of Montreal with France in 1701. In the same war that pushed France out of India, Britain drove France out of Canada (the North American theater is often called the French and Indian War).

Continuity and Change in Economic Systems

The big continuity: Indian Ocean trade absorbed the European disruption and kept flourishing, including intra-Asian trade run by Asian merchants. The big change: Europeans, especially the Portuguese, used military force in a network that had previously run on religious and ethnic ties, taxes, and port fees rather than arms.

• The Portuguese built a string of armed trading posts along Indian Ocean routes. In 1509 they won the Battle of Diu in the Arabian Sea against the combined forces of Gujaratis, the Mamluks of Egypt, and the Zamorin of Calicut (backed by Venice).
• Even so, merchants largely continued as before, paying for port access and trading through traditional networks of Swahili Arabs, Omanis, Gujaratis, and Javanese merchants.

Spanish Silver and Mercantilism

Gold was sparse in the Caribbean (Columbus found little on Hispaniola and instead kidnapped and enslaved Taino people). Silver, discovered in Mexico and Peru, is what made Spain rich.

• The use of mercury to separate silver from ore boosted profitability. By the end of the 16th century, Zacatecas in Mexico and Potosí in the Andes (modern Bolivia) were thriving silver-mining centers.
• To staff the mines, Spanish authorities in Peru transformed the traditional Incan mit'a (a labor obligation for public works) into a coerced labor system. Villages had to send a percentage of their men to do the most dangerous mine work for a paltry wage.
• The encomienda system let encomenderos (landowners) compel indigenous people to work in exchange for food and shelter, similar to European serfdom and notorious for brutality. The hacienda system grew when the crown granted land to conquistadores, who used coerced labor to farm wheat, fruit, vegetables, and sugar.
• All of this served mercantilism, an economic system that increased government control through high tariffs and colonies. Under mercantilism, a country wants to export more than it imports, and colonies exist to enrich the home country. A share of silver went straight to the Spanish crown, which used it to build the military and expand foreign trade.

Continuity and Change in Labor and Slavery

Colonial economies in the Americas depended on agriculture and used a mix of old and new labor systems. Know how these differ:

• Enslaved people were considered property with few or no rights (chattel slavery).
• Indentured servants got passage to a new location paid for, then worked without pay for up to about seven years before going free.
• Serfs were attached to the land with little legal protection; free peasants worked their own land but paid taxes and tithes.

Why Enslaved Africans?

Europeans first forced indigenous people to mine and farm, but European diseases wiped out huge portions of these laborers, and survivors often escaped because they knew the territory and had protective social networks. European indentured servants, mostly growing tobacco, struggled with the climate and only owed about seven years of labor. Plantation owners turned to the Atlantic slave trade for a permanent, hereditary labor force.

Slavery existed in Africa before European involvement, including the incorporation of enslaved women into households, and Arab merchants had long bought enslaved people on the Swahili Coast. But the Atlantic slave trade wreaked the most havoc. Some coastal African rulers raided neighbors for captives or sold prisoners of war, servants, or criminals. King Afonso of Kongo initially allowed the trade but resisted it once he saw it depopulating his kingdom and undermining his authority, since subjects could trade captives for European goods without him.

The Middle Passage and Its Consequences

Captives were held in coastal barracoons ("slave castles" like the House of Slaves on Gorée Island, Senegal), then crammed into ship cargo holds for the roughly six-week Atlantic crossing known as the Middle Passage. Up to half a ship's captives might die on a voyage; across the whole trade (early 1500s to mid-19th century), 10 to 15 percent of African captives died before reaching the Americas. Portuguese colonies received the largest share of enslaved Africans (39%), followed by British West Indian and Spanish colonies (18% each), French colonies (14%), and British mainland colonies (6%).

The plantation economy's growth drove major demographic, social, and cultural change. African home regions suffered a century-long population decline. Because more men than women were taken, polygyny became more common in Africa. In the Americas, enslaved Africans shaped language and culture everywhere they were taken, and the mixing of ethnic groups produced new multiracial populations such as mestizos and mulattos.

The Indian Ocean slave trade, which peaked in the 18th and 19th centuries, sent enslaved East Africans to northern Africa, the Middle East, India, and islands like Madagascar. Their experience differed: many worked in seaports, households, or as sailors and soldiers, lived in towns where they could form communities, and in Islamic communities held certain rights, such as the right to marry.

Key Terms to Know

Practice and Next Steps

Check your understanding with the 4.4 Maritime Empires Established study guide, which covers the same College Board topic from the course-guide angle. The chapter continues in AMSCO 4.5 Maritime Empires Develop, which goes deeper into how these empires were maintained. You can find the rest of the chapter notes on the AMSCO notes page.

To test yourself, try AP World guided practice questions on Unit 4, or work a continuity-and-change prompt with FRQ practice and instant scoring. Labor systems and maritime empires show up constantly in LEQs and DBQs, so this is a high-value topic to practice writing about.