 Complete the following phrase:  In the United States, the firm of Louis Comfort Tiffany played a central role in American Art Nouveau. Born in 1848, he studied at the National Academy of Design in New York, began working with glass at the age of 24, entered the family business started by his father, and in 1885 set up his own enterprise devoted to fine glass, and developed new techniques for its colouring. In 1893, he began making glass vases and bowls, again developing new techniques that allowed more original shapes and colouring, and began experimenting with decorative window glass. Layers of glass were printed, marbled and superimposed, giving an exceptional richness and variety of colour in 1895 his new works were featured in the Art Nouveau gallery of Siegfried Bing, giving him a new European clientele. After the death of his father in 1902, he took over the entire Tiffany enterprise, but still devoted much of his time to designing and manufacturing glass art objects. At the urging of Thomas Edison, he began to manufacture electric lamps with multicoloured glass shades in structures of bronze and iron, or decorated with mosaics, produced in numerous series and editions, each made with the care of a piece of jewellery. A team of designers and craftsmen worked on each product. The Tiffany lamp in particular became one of the icons of the Art Nouveau, but Tiffanys craftsmen and craftswomen designed and made extraordinary windows, vases, and other glass art. Tiffanys glass also had great success at the 