The Columbian Exchange: Biological and Cultural Consequences of 1492 - Alfred W. Crosby - Google Books

https://books.google.de/books?id=n-y_bn3ZM4EC

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…