ultrafacts: The Columbian Exchange or Grand Exchange was the widespread transfer of animals, plants, culture, human populations, technology and ideas between the American and Afro-Eurasian hemispheres in the 15th and 16th centuries, related to European
ultrafacts: The Columbian Exchange or Grand Exchange was the widespread transfer of animals, plants, culture, human populations, technology and ideas between the American and Afro-Eurasian hemispheres in the 15th and 16th centuries, related to European