The Columbian exchange made and changed history by bringing two completely different worlds that were once very unrelated, as one. The worlds that had grown apart with very unalike life form, started to become unvaried. The Columbian Exchange refers to a time of botanical and ethnic trade between the two worlds. A huge biological change occurred due to travelers introducing items to the other world. Exchanges of disease, plants, and animals, changed the Native American and European way of life. The habitats of the world became so different, and so extreme, that the residents of the two worlds were greatly influenced.
Some of the most dominant things brought from the Old World to the New World were animals such as chickens, pigs, and horses,