Exchanges
Christopher Columbus brought many new things with him to the Americas. For example he brought cows, horses, and pigs. The population of these animals grew tremendously. They took well to all the grass lands a fresh vegetation the Americas had to offer and prospered. Also he brought dogs, cats, and rat which roamed wild in the Americas. Some agricultural goods brought to the over where wheat, barley, and sugar cane. All these new animals and goods provided many new food sources for the native Americans