Furniture is a broad term for functional and designed objects from several centuries. In general, they are characterized by different stylistic features such as Baroque, Rococo , Neoclassicism, Art Nouveau and Functionalism . Sometimes they are signed and dated by the manufacturer. Until 1847 the guilds had control, which meant that production was heavily regulated and that only an approved master could produce furniture in Sweden. This contributed to ensure that the furniture were of high quality when it came to materials and workmanship. Later came new social ideals that influenced both choice of materials and design. Tubular steel, bent wood and plastics revolutionized furniture manufacturing.