The Age of Exploration (also called the Age of Discovery) refers to a span of roughly two centuries during which European maritime powers—initially Portugal and Spain, later the Netherlands, England, and France—launched sustained transoceanic voyages that connected previously separate regional economies into a single, if deeply unequal, global system.
Key drivers included demand for direct access to Asian spice and silk markets (bypassing Ottoman and Venetian intermediaries), advances in navigation such as the magnetic compass, astrolabe, and the Portuguese caravel, and competitive pressure among emerging dynastic states. Religious motivations—particularly the spread of Christianity after the Reconquista—also played a role.
Landmark voyages typically cited include:
- Bartolomeu Dias rounding the Cape of Good Hope (1488).
- Christopher Columbus's first transatlantic voyage under Castilian sponsorship (1492).
- Vasco da Gama reaching Calicut by sea (1498).
- Pedro Álvares Cabral's landing in Brazil (1500).
- The Magellan–Elcano circumnavigation, completed 1522.
The era was structured politically by instruments such as the Treaty of Tordesillas (1494), which divided non-European spheres between Portugal and Spain along a meridian west of the Cape Verde islands, and later the Treaty of Zaragoza (1529) extending the line to the Pacific.
For IR and Model UN purposes, the period is foundational to several enduring debates: the origins of the modern state system and sovereignty (often linked to later Westphalia, 1648); the legal genealogy of terra nullius and discovery doctrines invoked in later colonial disputes; the Columbian Exchange of crops, pathogens, and people; and the demographic catastrophe in the Americas. It also seeded the Atlantic slave trade and the mercantilist commercial order that shaped 17th- and 18th-century geopolitics.
Contemporary scholarship increasingly frames the period not as European "discovery" but as forced integration, emphasising indigenous agency, resistance, and the perspectives of African and Asian polities encountered by European fleets.
Example
In 1494, Spain and Portugal signed the Treaty of Tordesillas, dividing newly encountered lands outside Europe between the two crowns along a meridian in the Atlantic.
Frequently asked questions
Historians generally date it from the early 15th century—often marked by Portuguese voyages along the African coast under Henry the Navigator—through the 17th century, though exact boundaries vary.
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