Why Europeans Sought New Trade Routes in the 15th Century

The Ottoman Blockade Catalyzed the Age of Discovery

The pivotal event: **Ottoman conquest of Constantinople (1453)**. This severed the traditional overland Silk Road routes to Asia, making spices, silk, and gems scarce and expensive in Europe.

Four Driving Forces

1. Economic Incentive: Direct access to Asian goods = massive profits; monopoly potential.
2. Political Rivalry: Portugal, Spain, later Netherlands/England competed for wealth, empire, prestige.
3. Technology: Caravel ships, magnetic compass, astrolabe, improved cartography enabled oceanic voyages.
4. Curiosity & Crusading Zeal: Renaissance exploration spirit; religious mission to bypass Muslim lands.

Resulting Pathways

• **East via Africa:** Dias (Cape of Good Hope 1488), da Gama (India 1498) — Portugal
• **West across Atlantic:** Columbus (1492) → Americas — Spain
• **Later:** Magellan circumnavigation (1519–22); Northwest/Northeast Passage searches

This quest reshaped the world—global trade, colonization, Columbian Exchange, rise of Atlantic powers.