The Columbian Exchange transformed the world through three categories: plants, animals, and diseases. Some plants that were exchanged from the eastern hemisphere to the western hemisphere were wheat, rice, and barley. Then from the western hemisphere to the eastern hemisphere potatoes, corn (teosinte), and tomatoes were exchanged. The exchange of plants between the eastern and western hemispheres helped the populations begin to increase. Another category involved in the Columbian Exchange was animals. From the eastern hemisphere to the western hemisphere cattle, horses, goats, and sheep were transported to America. No animals were exchanged from the western hemisphere to the eastern hemisphere. The third category involved with the Columbian
