Chapter 15: The Maritime Revolution, to 1550 Outline



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AP World History Chapter 15: The Maritime Revolution, to 1550 Outline


 I. Global Maritime Expansion Before 1450

A. The Pacific Ocean

1.  Over a period of several thousand years, peoples originally from Asia crossed the water to settle the islands of the East Indies, New Guinea, the Melanesian and Polynesian islands, the Marquesas, New Zealand, and other Pacific islands out to Hawaii. Polynesian use of the sweet potato, domesticated in South America, suggests that they may have reached the Americas.

2.  Polynesian migration and establishment of colonies was aided by the development of large, double-hulled canoes that used both paddlers and sails. Polynesian mariners navigated by the stars and by their observations of ocean currents and evidence of land.

B. The Indian Ocean

1.  Malayo-Indonesians colonized the island of Madagascar in a series of voyages that continued through the fifteenth century.

2.  Arab seafarers used the regular pattern of the monsoon winds to establish trade routes in the Indian Ocean. These trade routes flourished when the rise of Islam created new markets and new networks of Muslim traders.

3.  The Chinese Ming dynasty sponsored a series of voyages to the Indian Ocean between 1405 and 1433. The Ming voyages were carried out on a grand scale, involving fleets of over sixty large treasure ships and hundreds of smaller support vessels.

4.  The treasure ships carried out trade in luxury goods including silk and precious metals, as well as stimulating diplomatic relations with various African and Asian states. The voyages, which were not profitable and inspired opposition in court, were ended in 1433.

C. The Atlantic Ocean

1.  During the relatively warm centuries of the early Middle Ages, the Vikings, navigating by the stars and the seas, explored and settled Iceland, Greenland, and Newfoundland (Vinland). When a colder climate returned after 1200, the northern settlements in Greenland and the settlement in Newfoundland were abandoned.

2.  A few southern Europeans and Africans attempted to explore the Atlantic in the thirteenth and fourteenth centuries. Voyagers from Genoa in 1291 and from Mali in the 1300s set out into the Atlantic but did not return. Genoese and Portuguese explorers discovered and settled the Madeiras, the Azores, and the Canaries in the fourteenth century.

3.  In the Americas, the Arawak from South America had colonized the Lesser and Greater Antilles by the year 1000. The Carib followed, first taking over Arawak settlements in the Lesser Antilles and then, in the late fifteenth century, raiding the Greater Antilles.

II. European Expansion, 1400–1550

A. Motives for Exploration

1.  The Iberian kingdoms sponsored voyages of exploration for a number of reasons, including both the adventurous personalities of their leaders and long-term trends in European historical development: the revival of trade, the struggle with Islam for control of the Mediterranean, curiosity about the outside world, and the alliances between rulers and merchants.

2.  The city-states of northern Italy had no incentive to explore Atlantic trade routes because they had established a system of alliances and trade with the Muslims that gave them a monopoly on access to Asian goods. Also, Italian ships were designed for the calm waters of the Mediterranean and could not stand up to the violent weather of the Atlantic.

3.  The Iberian kingdoms had a history of centuries of warfare with Muslims. They had no significant share in the Mediterranean trade, but they had advanced shipbuilding and cannon technology. They were open to new geographical knowledge and had exceptional leaders.

B. Portuguese Voyages

1.  The Portuguese gained more knowledge of the sources of gold and slaves south of the Sahara when their forces, led by Prince Henry, captured the North African caravan city of Ceuta. Prince Henry (“the Navigator”) then sponsored a research and navigation institute at Sagres to collect information about and send expeditions to the African lands south of North Africa.

2.  The staff of Prince Henry’s research institute in Sagres studied and improved navigational instruments, including the compass and the astrolabe. They also designed a new vessel, the caravel, whose small size, shallow draft, combination of square and lateen sails, and cannon made it well suited for the task of exploration.

3.  Portuguese explorers eventually learned to pick up the prevailing westerly winds that would blow them back to Portugal, contributing important knowledge about oceanic wind patterns to the maritime community.

4.  The Portuguese voyages eventually produced a financial return, first from trade in slaves, and then from the gold trade.

5.  Beginning in 1469, the process of exploration picked up speed as private commercial enterprises began to get involved. The Lisbon merchant Fernao Gomes sent expeditions that discovered and developed the island of São Tomé and explored the Gold Coast. Bartolomeu Dias and Vasco da Gama rounded the tip of Africa and established contact with India, thus laying the basis for Portugal’s maritime trading empire.

C. Spanish Voyages

1.  When Christopher Columbus approached the Spanish crown with his project of finding a new route to Asia, the Portuguese had already established their route to the Indian Ocean. The King and Queen of Spain agreed to fund a modest voyage of discovery, and Columbus set out in 1492 with letters of introduction to Asian rulers and an Arabic interpreter.

2.  After three voyages, Columbus was still certain that he had found Asia, but other Europeans realized that he had discovered entirely new lands. These new discoveries led the Spanish and the Portuguese to sign the Treaty of Tordesillas, in which they divided the world between them along a line drawn down the center of the North Atlantic.

3.  Ferdinand Magellan’s voyage across the Pacific confirmed Portugal’s claim to the Molucca Islands and established the Spanish claim to the Philippines.

III. Encounters with Europe, 1450–1550

A. Western Africa

1.  During the fifteenth century, many Africans welcomed the Portuguese and profited from their trade, in which they often held the upper hand. In return for their gold, Africans received from the Portuguese merchants a variety of Asian, African, and European goods, including firearms. Interaction between the Portuguese and African rulers varied from place to place.

2.  The oba (king) of the powerful kingdom of Benin sent an ambassador to Portugal and established a royal monopoly on trade with the Portuguese. Benin exported a number of goods, including some slaves, and its rulers showed a mild interest in Christianity. After 1538, Benin purposely limited its contact with the Portuguese, declining to receive missionaries and closing the market in male slaves.

3.  The kingdom of Kongo had fewer goods to export and consequently relied more on the slave trade. When the Christian King Afonso I lost his monopoly over the slave trade, his power was weakened and some of his subjects rose in revolt.

B. Eastern Africa

1.  In Eastern Africa, some Muslim states were suspicious of the Portuguese, while others welcomed the Portuguese as allies in their struggles against their neighbors. On the Swahili Coast, Malindi befriended the Portuguese and was spared when the Portuguese attacked and looted many of the other Swahili city-states in 1505.

2   Christian Ethiopia sought and gained Portuguese support in its war against the Muslim forces of Adal. The Muslims were defeated, but Ethiopia was unable to make a long-term alliance with the Portuguese because the Ethiopians refused to transfer their religious loyalty from the patriarch of Alexandria to the Roman pope.

C. Indian Ocean States

1.  When Vasco da Gama arrived in Calicut in 1498, he made a very poor impression with his simple gifts. Nonetheless, the Portuguese were determined to control the Indian Ocean trade, and their superior ships and firepower gave them the ability to do so.

2.  To assert their control, the Portuguese bombarded the Swahili city-states in 1505, captured the Indian port of Goa in 1510, and took Hormuz in 1515. Extending their reach eastward, Portuguese forces captured Malacca in 1511 and set up a trading post at Macao in southern China in 1557.

3.  The Portuguese used their control over the major ports to require that all spices be carried in Portuguese ships and that all other ships purchase Portuguese passports and pay customs duties to the Portuguese.

4.  Reactions to this Portuguese aggression varied. The Mughal emperors took no action, while the Ottomans resisted and were able at least to maintain superiority in the Red Sea and the Persian Gulf. Some smaller states cooperated with the Portuguese; others tried evasion and resistance.

5.  The Portuguese never gained complete control of the Indian Ocean trade, but they did dominate it enough to bring themselves considerable profit and to break the Italian city-states’ monopoly on pepper.

D. The Americas

1.  While the Portuguese built a maritime trading empire in Africa and Asia, the Spanish built a territorial empire in the Americas. The reasons for the difference are to be found in the isolation of Amerindian communities and their lack of resistance to Old World diseases.

2.  The Arawak were an agricultural people who mined and worked gold but did not trade it over long distances and had no iron. Spanish wars killed tens of thousands of Arawak and undermined their economy; by 1502, the remaining Arawak of Hispaniola were forced to serve as laborers for the Spanish.

3.  What the Spanish did in the Antilles was an extension of Spanish actions against the Muslims in the previous centuries: defeating non-Christians and putting them and their land under Christian control. The actions of conquistadors in other parts of the Caribbean followed the same pattern.

4.  On the mainland, Hernan Cortes relied on native allies, cavalry charges, steel swords, and cannon to defeat the forces of the Aztec Empire and capture the Tenochtitlan. The conquest was also aided by the spread of smallpox among the Aztecs. Similarly, Francisco Pizarro’s conquest of the Inca Empire was made possible by the dissatisfaction of the Inca Empire’s recently conquered peoples and by Spanish cannon and steel swords.

IV. Conclusion

A. Imperial Comparisons

1.  Strong centralized governments like China’s were not inclined to attempt long-distance exploration.

2.  Weaker rulers such as the Iberian monarchs left the details of exploration to individuals, such as Columbus, who proposed them.

3.  Dominance of the Americas by Spain and Portugal was aided by the native populations’ vulnerability to European disease and by the superior weaponry of Europe.

4.  Natives of Asia and Africa had more immunity to European diseases from earlier contact and were more able to resist militarily.

B. Economic Comparisons



1.  Europeans found sophisticated markets and trade networks in Africa and Asia.

2.  In contrast, Europeans needed to introduce new technology and strong political control over American natives to exploit their natural resources.


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