One of the first European exports to the Americas, the horse, changed the lives of many Native American tribes. The mountain tribes shifted to a nomadic lifestyle, based on hunting bison on horseback. They largely gave up settled agriculture. Horse culture was adopted gradually by Great Plains Indians
The Turks were defeated by Crusaders at Jerusalem because "they could not remain united," since it was this lack of unification that led to their forces being divided and reckless. <span />
