An exchange of plants, animals, diseases, and technologies between America and the rest of the world
Old World Diseases: smallpox, influenza, malaria
Old World Plants: wheat, rice sugar
Old World Animals: cattle, horses, sheep
Old World: Europe, Asia, Africa
New World Diseases: hepatitis, polio, syphilis
New World Plants: corn, cocoa, tobacco
New World Animals: turkey, llama, guinea pigs
New World: Americas
New world crops led to the greatest population increase in history