Examples of the positive effects is the introduction of new fruits and plants such as banana, wheat, orange, peach, and rice to the New World, and Beans, Cocoa, corn, tomato, and potato to the Old World. Another example of positive effects is the presentation of animals. Europe transported animals such as horses, cattle, dogs, cats, sheep, chicken, and swine to the Americas. This was an advantage for the Native Americans because they used horses to hunt bison. Horses also made traveling easier for the nomads and hunters. Animals such as the gray squirrel, muskrat, turkey were brought from America over to Europe in exchange of animals. The Columbian Exchange was the interchange of agriculture, livestock, food, religious ideas, diseases, and slaves between the New World and Old World. This change resulted in the introduction of new plants and animals to the New and Old Worlds as positive effects of this grand exchange, but the negative effects include the new, deadly diseases spread throughout the New World, killing millions of people.
Examples of the positive effects is