The Maritime Revolution and Early European Global Expansion

Portuguese Maritime Development and Technology

Navigational Instruments: Prince Henry the Navigator and his staff improved instruments based on external inventions.
- Magnetic Compass: Originating in China, used for direction.
- Astrolabe: Of Arab or Greek invention; allowed mariners to determine location at sea by measuring the position of the sun during the day or stars at night.
- Limitations: Despite these tools, voyages still heavily relied on the skill and experience of navigators.
Development of the Caravel: Portuguese mariners developed the caravel (KAR-uh-vel) as the ideal vessel for long-distance Atlantic exploration.
- Comparison: Galleys (Mediterranean) had too many oarsmen requiring vast supplies; northern European ships (three-masted, square-sailed) struggled to sail at angles to the wind.
- Design: Caravels were smaller than largest European ships or Chinese junks. They possessed small drafts to enter shallow coastal waters and upriver, but were strong enough for ocean storms.
- Sails: Equipped with triangular lateen sails for maneuverability (taking wind on either side) and could be fitted with square sails for speed.
- Military Capabilities: Fitted with small cannons, making them effective fighting ships.
- Reputation: Described by contemporaries as "the best ships that sailed the seas."

Portuguese Voyages Along the African Coast

Overcoming Fear: Captains initially feared South Atlantic waters were boiling hot or had currents that prevented return. Prince Henry spent $14$ years (from $1420$ to $1434$ ) coaxing an expedition beyond southern Morocco.
Mapping Breakthroughs:
- It took four decades to cover $1,500$ miles ( $2,400\,km$ ) from Lisbon to Sierra Leone (Serra lioa), named for mountains shaped like lions.
- Explorers utilized the Gold Coast (modern Ghana), named for its gold exports to Europe starting in the $1470s$ .
- Navigators learned to return home by sailing northwest to the latitude of the Azores, catching prevailing westerly winds.
Commercial Evolution:
- Slave Trade: Began in the $1440s$ during raids on the northwest coast and Canary Islands; over $80,000$ Africans were captured or purchased by the end of the century.
- Gold Trade: Became the primary focus once West African trading networks were reached. By $1457$ , Portugal issued the cruzado (crusader), a gold coin reflecting both religious and secular motives.
- Sugar Plantations: Fernão Gomes explored $350$ miles ( $550\,km$ ) of coast and discovered São Tomé (sow toh-MAY). He converted the island into a major sugar producer using enslaved labor, serving as a model for later Caribbean and Brazilian plantations.
Rounding Africa:
- Bartolomeu Dias: In $1488$ , became the first to round the southern tip of Africa and sight the Indian Ocean.
- Vasco da Gama: Between $1497$ and $1498$ , he led the first naval expedition from Europe to India.
- Pedro Alvares Cabral: In $1500$ , while sailing for India, he went too far west and reached South America, establishing Portugal’s claim to Brazil.

Spanish Voyages and the Discovery of the Americas

Strategic Differences: Unlike the systematic Portuguese planning, Spanish expansion was characterized by haste and luck. Spain was preoccupied with the Reconquista and internal consolidation until late in the fifteenth century.
Christopher Columbus (1451–1506):
- A Genoese mariner who believed a shorter westward route to the East existed.
- The Calculation Error: Based on a misreading of a ninth-century Arab authority, Columbus estimated the distance from the Canaries to Japan at $2,400\,nautical\,miles$ ( $4,450\,km$ ). The actual distance is five times that amount.
- Funding: Twice rejected by Portugal and initially by Queen Isabel of Castile. In $1492$ , Isabel and King Ferdinand of Aragon agreed to fund him.
- Expedition: Left Friday, August $3$ , $1492$ , with three small ships and $90$ men. He carried letters for the "Grand Khan" (Chinese Emperor) and an Arabic interpreter.
- Legacy: Insisted until death that the islands and mainland he reached in the Caribbean were part of Asia. He labeled inhabitants "Indians."
Division of the World:
- Amerigo Vespucci: Explorations led to the naming of the new continents "America."
- Treaty of Tordesillas (1494): Negotiated by the pope, it drew an imaginary line down the North Atlantic. Lands east of the line (Africa/Asia) went to Portugal; lands west (Americas) went to Spain.
- Ferdinand Magellan: Led the $1519$ expedition for Spain to complete the westward voyage to Asia. He is considered the first to encircle the globe as he had previously sailed to the East Indies from Europe under Portugal.

Cross-Cultural Encounters in Western and Eastern Africa

Western Africa (Gold Coast):
- Africans traded gold for cheaper imports from European ships compared to Sahara caravans.
- King Caramansa: Negotiated with the Portuguese in $1482$ to build a trading fort (Saint George of the Mine/Elmina). He warned that if they acted aggressively, his people would move away, cutting off their food and trade.
Kingdom of Benin:
- The oba (king) established a royal monopoly. He traded pepper, ivory, and prisoners of war for copper, brass, textiles, glass beads, and horses.
- Ultimately, Benin restricted the slave trade and declined further Christian missionaries after $1538$ .
Kingdom of Kongo:
- Converted to Catholicism as the official faith. Lacking ivory or pepper, they relied heavily on the slave trade to pay for European goods and missionaries.
- Afonso I: In $1526$ , wrote to the Portuguese king to stop the kidnapping of Kongolese citizens. The Portuguese, focused on the Indian Ocean, ignored him, leading to political instability.
Eastern Africa:
- Most Muslim coastal states were suspicious of fleets carrying Crusader crosses on sails. Malindi was the exception, providing a pilot to da Gama.
- In $1505$ , a Portuguese fleet bombarded and looted most coastal cities except Malindi.
Christian Ethiopia:
- Sought an alliance against the Ottoman-backed state of Adal.
- Queen Helena: Served as regent and sent tiny crucifixes as gifts to Portugal in $1509$ .
- Christopher da Gama: Son of Vasco, led a force to aid Ethiopia in $1539$ . He was killed, but the leader of Adal was mortally wounded, saving the kingdom.
- Failure of Alliance: Faltered because Ethiopia refused to change Christian affiliation from Alexandria to the Latin patriarch in Rome.

Indian Ocean States and Portuguese Hegemony

Calicut (1498): Vasco da Gama’s gifts (striped cloth, scarlet hoods, hats, wash basins) were mocked by the samorin (ruler) as inferior to standard Indian Ocean luxuries.
Portuguese Strategy: Transitioned from trade to military control. King Manuel styled himself "Lord of the Conquest, Navigation, and Commerce of Ethiopia, Arabia, Persia, and India."
Military Bases:
- Goa (1510): Became the primary Portuguese base.
- Malacca (1511): Strategic trading center seized using $1,000$ men (including $300$ mercenaries from southern India).
- Hormuz (1515) and Diu (1535): Captured to control trade entry points.
Control Mechanisms:
- Established a monopoly on spices.
- Required merchant ships to carry a Portuguese passport and pay customs duties. Non-compliant ships were seized, and crews were killed or sentenced to forced labor.
Regional Reactions:
- Mughal Empire: Largely ignored the maritime intrusion to focus on land control.
- Ottoman Empire: Attempted expeditions in $1501-1509$ and $1538$ to counter Portugal; failed as their galleys were no match for faster Portuguese ships in the open ocean.
- Gujarat: Initially resisted but allowed a Portuguese fort at Diu in $1535$ due to Mughal threats.

The Conquest of the Americas: Aztecs and Inka

Demographic Impact: Isolation made Indigenous Americans vulnerable to Old World diseases. Smallpox killed thousands and collapsed resistance after $1518$ .
Conquest of Mexico (1519–1521):
- Hernn Corts: Led $600$ men from Cuba to Mexico.
- Alliances: Utilized the Tlaxcalans, who resented Aztec human sacrifice and tribute. Malintzin (Malinche) served as translator and mistress.
- Fall of Tenochtitlan: Corts imprisoned Moctezuma II. After a rebellion and the "Noche Triste," Corts returned and captured the city in $1521$ . The ruler Cuauhtemoc was tortured and executed.
Conquest of Peru (1531–1533):
- Francisco Pizarro: Entered Inka territory with $180$ men, $37$ horses, and $2$ cannons during a civil war between Atahuallpa and Huascar.
- Cajamarca: Pizarro captured Atahuallpa in an ambush.
- Ransom: Atahuallpa provided $13,400\,pounds$ ( $6,000\,kg$ ) of gold and $26,000\,pounds$ ( $12,000\,kg$ ) of silver. The Spaniards executed him anyway.
- Manco Inka: Led a rebellion in $1536$ , establishing a small independent kingdom that survived until $1572$ .

Issues in World History: Climate and Population

Three Population Surges:
1. After 100,000 BCE: Human migration from Africa.
2. 5000 BCE to 500 BCE: Growth from $5\,million$ to $100\,million$ due to agricultural development.
3. By 1200 CE: Surge to over $350\,million$ .
Climate Factors:
- Medieval Weather Anomaly: Elevated temperatures in Europe ( $1100s-1200s$ ) led to longer growing seasons.
- The 1300s Decline: Heavy rains ( $1315-1319$ ) caused famine in northern Europe. The Black Death followed, leading to massive population loss. Average temperatures dropped to their lowest in millennia between $1350$ and $1375$ .
Comparison: Europe recovered faster after $1400$ than China, despite the earlier Mongol disruption in China (which cut the population from $100\,million$ by a third or more).

Portugal's growing power in Africa and Asia and Spain's control of a large Western Hemisphere empire established critical foundations for later European global dominance through trade networks, territorial expansion, and cultural exchanges.

Portugal's maritime advancements during the Age of Exploration were particularly significant. By improving navigational instruments such as the magnetic compass and astrolabe, Portuguese mariners could successfully navigate uncharted waters. Their development of the caravel, a ship designed for long-distance exploration, allowed them to traverse the Atlantic and reach Africa and Asia. These advancements facilitated the establishment of trade routes that linked Europe to lucrative markets, fostering economic growth.

Portuguese explorers were instrumental in mapping the coasts of Africa, uncovering vital resources, and engaging in trade—most notably through the lucrative slave trade and the gold trade. This established a model for future colonial enterprises based on extracting resources to enrich the mother country. Furthermore, Portugal's establishment of trading posts across West Africa and its influence in the Indian Ocean opened opportunities for Asian trade, particularly in spices and other goods, which were critical to the European economy.

In parallel, Spain emerged as a dominant global power through its conquests in the Americas. The expeditions led by figures like Hernán Cortés, who conquered the Aztec Empire, and Francisco Pizarro, who subdued the Inkas, resulted in vast territorial acquisitions. These conquests brought immense wealth to Spain, primarily through the extraction of gold and silver, fundamentally altering the European economy and enhancing Spain’s political power on the continent. The Treaty of Tordesillas in 1494, which divided the Newly discovered lands between Spain and Portugal, highlighted the significance of these empires in shaping global politics.

The cultural implications of these developments cannot be overlooked. As Europeans extended their empires, they spread Christianity, creating a significant cultural and religious impact on indigenous populations across Africa, the Americas, and Asia. This led to both cultural exchange and conflict, fostering an environment of intercultural dialogue that was unprecedented in history.

Moreover, the economic systems established during this period—rooted in mercantilism—emphasized the accumulation of wealth through trade. The success of Portugal and Spain motivated other European nations to pursue similar colonial ambitions, leading to competition and further maritime expansion. This ultimately catalyzed the rise of other powers such as England, France, and the Netherlands, setting the stage for a new age of European imperialism.

In conclusion, the foundations built by Portugal's maritime advancements in Africa and Asia and Spain's conquests in the Americas were crucial in shaping the trajectory of European global power. By establishing trade networks, economic models, and cultural exchanges, these early global powers set the groundwork for centuries of European dominance, marking a turning point in world history.