By the end of the nineteenth century, the preindustrial craft trades had almost disappeared. Industrial expansion and westward movement had largely severed American culture from early Colonial American and Native American craft roots. Against this backdrop, Louis Comfort Tiffany was a pioneer of the American craft movement, arguing for the placement of well-designed and crafted objects in the American home. Tiffany's elegant stained glass creations were influenced by the values of William Morris and became America's leading embodiment of art nouveau.