Summary: Thirty years ago, Alfred Crosby published a small work that illuminated a simple point, that the most important changes brought on by the voyages of Columbus were not social or political, but biological in nature. The book told the story of how 1492 sparked the movement of organisms, both large and small, in both directions across the Atlantic. This "Columbian exchange," between the Old World and the New, changed the history of our planet drastically and fo ...show morerever. ...show lessEdition/Copyright: 03
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