Columbian Exchange (1492-1800) (jan 1, 1800 – jan 1, 1942)
Description:
In 1492, Columbus brought the Eastern and Western Hemispheres back together. The resulting swap of Old and New World germs, animals, plants, peoples, and cultures has been called the “Columbian Exchange.” Humans from Asia probably first entered the Western Hemisphere between 20,000 and 30,000 years ago.
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