The Columbian Exchange and the demographic collapse of Indigenous America
- Date
- From 1493 (16th century)
- Category
- Social & demographic
- Region
- Americas; global
- Era
- Post-Classical / Medieval
- Significance
Following Columbus's voyages, sustained Atlantic contact set off the Columbian Exchange, a vast two-way transfer of crops, animals, peoples and pathogens between the Old and New Worlds.
American staples such as maize, potatoes, cassava, tomatoes, chillies, cacao and tobacco spread across Europe, Africa and Asia, eventually fuelling population growth worldwide, while Europeans brought wheat, sugar, horses, cattle, pigs and other livestock to the Americas, transforming landscapes and Indigenous societies. The most devastating transfers were biological: Eurasian diseases including smallpox, measles, influenza and typhus, to which Indigenous Americans had no immunity, swept through the hemisphere in repeated epidemics. Across the sixteenth and seventeenth centuries roughly 90 percent of the pre-contact population is estimated to have perished, among the largest demographic catastrophes in recorded history; epidemics such as the cocoliztli outbreaks in Mexico killed millions. This collapse facilitated European conquest, drove the importation of enslaved Africans to replace lost labour, and permanently reshaped the world's diets, ecosystems and populations.
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Empires active in From 1493 (16th century)
- Inca Empire1438 CE – 1533 CE
- Ming Dynasty1368 CE – 1644 CE
- Aztec Empire1428 CE – 1521 CE
- Songhai Empire1464 CE – 1591 CE
- Malacca Sultanate1400 CE – 1511 CE
- Ottoman Empire1299 CE – 1922 CE
Related social & demographic events
- The Black Death sweeps Europe, North Africa and the Middle East1347–1351 CE
- Siege of Kaffa and the spread of the Black Death along Mongol trade routes1346–1347 CE
- Banu Hilal Migration Arabises the Maghrebc. 1050 onward (11th century)
- Rise of Cahokia, the largest city of Mississippian North Americac. 1050 CE
- Zanj Rebellion against the Abbasid Caliphate869-883 CE
- Collapse of the Classic Maya lowland city-statesc. 800–900 CE
Further reading
If you read one book
1493: Uncovering the New World Columbus Created
Bestselling account of the biological and human exchange.
Get it on Amazon →Also worth reading
- The Columbian Exchange: Biological and Cultural Consequences of 1492 — Amazon →
The Columbian Exchange: Biological and Cultural Consequences of 1492
The foundational book that coined the term, still readable and widely held.
Get it on Amazon →
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