1492
Exploration
Atlantic
Transatlantic contact
Columbus's voyages link the Americas and Eurasia permanently.
Why it mattered
Began the Columbian Exchange of crops, diseases, peoples and empires.
Renaissance
1492
1 recorded milestone at this point in the record.
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Nearby in the record
c. 1450Communication
Inca road system and khipu
Andes
c. 1450Agriculture
Terra preta and Amazonian soil engineering
Amazonia
1494Society
Double-entry bookkeeping
Italy
c. 1500Agriculture
Chinampa agriculture at Tenochtitlan
Mesoamerica
c. 1518Agriculture
Columbian Exchange of crops
Atlantic
1522Exploration
First circumnavigation
Global