Because of the prevalence of tributary streams and rivers in North America, canooing became a very reliable and safe means of travel which retarded advances in overland technology. Furthermore, since most tribes were nomadic, they followed their primary hunting game as they migrated to their seasonal forages. Therefore, there was no need for speed or for packing large quanties overland for long distances. The Native Americans usually only killed enough to satisfy their immediate needs and stored only enough for short stays. They prefered to travel light as well. When the Europeans brought horses to North America, they were adopted more for rapid mobility in warfare than as beasts of burden. Only the sedentary cultures like the Pueblo would have other uses for horses such as to pull carts.