Horse Nations provides the first globally comparative study of the impact of the horse on the Indigenous societies of North and South America, southern Africa, and Australasia following its (re-)introduction as a result of European contacts and settlement after Columbus' first voyage to the Americas in 1492. Drawing on sources in a variety of languages and on the evidence of archaeology, anthropology, and history, the volume outlines the transformationsthat the acquisition of the horse wrought on a diverse range of groups within these four continents.