This paper explains that the Spaniards
introduced the technical use of the wheel, domestic animals, including the horse,
and many new plants, such as grains, fruits, vegetables, and weeds to the New World; in return, the Americas offered Europe many new foods like potatoes, tomatoes, peanuts, almost all beans, and tobacco. The author pointed out that the Spaniards intermarried with the Indian aristocracy, which had a
genetic influence on the population of the Americas. The paper relates that the cultivation of rice and bananas, both
introduced, led to marked deforestation, which has had a large-scale impact on the environment.