Bartolomeu Dias's 1488 rounding of the Cape of Good Hope (Cabo da Boa Esperança) triggered a cascade of global changes:
Bypassed Ottoman/Venetian monopoly on land/Red Sea routes. Vasco da Gama reached Calicut (1498) — pepper, cinnamon, cloves, silk now shipped directly.
Established feitorias (fortified factories) at Mozambique, Kilwa, Goa, Malacca, Hormuz, Macau. Controlled Indian Ocean trade for a century.
Spurred Spanish westward voyage (Columbus 1492), Magellan circumnavigation (1519–22), Dutch/English/French entry.
Navigation demands → better astronomy, cartography, shipbuilding, instrumentation (astrolabe, cross-staff, later chronometer).
VOC established Kaapstad as refreshment station. Became settler colony, displacing Khoikhoi, importing slaves (Indonesia, Madagascar, Africa) — foundation of modern South Africa.
Royal Navy controlled Cape after 1795/1806. Vital for British Empire's India/China lifeline. Suez Canal (1869) reduced but didn't eliminate its importance.
Connected Atlantic and Indian Ocean systems permanently. Enabled Columbian Exchange's full circuit: American silver → Asian spices → European goods → African slaves → American plantations.