Hard to use what you don't have.
If you're interested in why the Euro's sailed to American and conquered them, instead of vice versa, there's a great book called Germs Guns and Steel, which goes into detail as to why the Euro's had such a technological advantage over the Indians. One contributing factor was the total lack of domesticatible animals in the western hemisphere, save for the llama in South America, and hard to ride into battle on one of those.
While the Euros had chickens and geese for food, horses for riding and transportation, cows for food and plowing, hogs for food, and others, that allowed for a stable food system to be developed, and division of labor. As well as the transport and building capabilities using horses and cattle to drag things around.