that emphasized its geometry. This period of the style reached its high point in the 1925 Paris Exposition of Decorative Arts. In the late 1920s and the 1930s, the decorative style changed, inspired by new materials and technologies. It became sleeker and less ornamental. Furniture, like architecture, began to have rounded edges and to take on a polished, streamlined look, taken from the streamline modern style. New materials, such as nickel or chrome-plated steel, aluminium and bakelite, an early form of plastic, began to appear in furniture and decoration. Throughout the Art Deco period, and particularly in the 1930s, the motifs of the décor expressed the function of the building. Theatres were decorated with sculpture which illustrated music, dance, and excitement; power companies showed sunrises, the Chrysler building showed stylized hood ornaments; The friezes of Palais de la Porte Dorée at the 1931 Paris Colonial Exposition showed the faces of the different nationalities of French colonies. The Streamline style made it appear that the building itself was in motion. The WPA murals of the 1930s featured ordinary people; factory workers, postal workers, families and farmers, in place of classical heroes. Furniture French furniture from 1910 until the early 1920s was largely an updating of French traditional furniture styles, and the art nouveau designs of Louis Majorelle, Charles Plumet and other manufacturers. French furniture manufacturers felt threatened by the growing popularity of German manufacturers and styles, particularly the Biedermeier style, which was simple and clean-lined. The French designer Frantz Jourdain, the President of the Paris Salon d'Automne, invited designers from Munich to participate in the 1910 Salon. French designers saw the new German style, and decided to meet the German challenge. The French designers decided to present new French styles in the Salon of 1912. The rules of the Salon indicated that only modern styles would be permitted. All of the major French furniture designers took part in Salon: Paul Follot, Paul Iribe, Maurice Dufrêne, André Groult, André Mare and Louis Suë took part, presenting new works that updated the traditional French styles of Louis XVI and Louis Philippe with more angular corners inspired by Cubism and brighter colours inspired by Fauvism and the Nabis. The painter André Mare and furniture designer Louis Süe both participated the 1912 Salon. After the war the two men joined to form their own company, formally called the Compagnie des Arts Française, but usually known