Archaeologists believe that animal hides provided an important source of clothing and shelter for all prehistoric humans and their use continued among non-agricultural societies into modern times.In early medieval ages hides were used to protect wooden castles and defense buildings from setting alight during a siege.Parchment and vellum—a kind of paper made from processed skins—was introduced to the Eastern Mediterranean during the Iron Age, supposedly at Pergamon.The Assize of Weights and Measures—one of the statutes of uncertain date from c. 1300—mentions rawhide, gloves, parchment, and vellum among the principal items of England's commerce.Ermine fur was particularly associated with European nobility, with the black-tipped tails arranged around the edges of the robes to produce a pattern of black diamonds on a white field.Demand for beaver hats in the 17th and 18th century drove some of the initial exploration of North America, particularly in Canada, and even prompted wars among native tribes competing for the most productive areas.