Mid-century modern (MCM) is a design movement in interior, product, graphic design, architecture, and urban development that was popular in the United States and Europe from roughly 1945 to 1969, during the United States's post–World War II period. The term was used descriptively as early as the mid-1950s and was defined as a design movement by Cara Greenberg in her 1984 book Mid-Century Modern: Furniture of the 1950s. It is now recognized by scholars and museums worldwide as a significant design movement. The MCM design aesthetic is modern in style and construction, aligned with the Modernist movement of the period. It is typically characterized by clean, simple lines and honest use of materials, and it generally does not include decorative embellishments. Architecture The Mid-century modern movement in the U.S. was an American reflection of the International and Bauhaus movements, including the works of Gropius, Florence Knoll, Le Corbusier and Ludwig Mies van der Rohe. Although the American component was slightly more organic in form and less formal than the International Style, it is more firmly related to it than any other. Brazilian and Scandinavian architects were very influential at this time, with a style characterized by clean simplicity and integration with nature. Like many of Wright's designs, Mid-century architecture was frequently employed in residential structures with the goal of bringing modernism into America's post-war suburbs. This style emphasized creating structures with ample windows and open floor plans, with the intention of opening up interior spaces and bringing the outdoors in. Many Mid-century houses utilized then-groundbreaking post and beam architectural design that eliminated bulky support walls in favor of walls seemingly made of glass. Function was as important as form in Mid-century designs, with an emphasis placed on targeting the needs of the average American family. In Europe, the influence of Le Corbusier and the CIAM resulted in an architectural orthodoxy manifest across most parts of post-war Europe that was ultimately challenged by the radical agendas of the architectural wings of the avant-garde Situationist International, COBRA, as well as Archigram in London. A critical but sympathetic reappraisal of the internationalist oeuvre, inspired by Scandinavian Moderns such as Alvar Aalto, Sigurd Lewerentz and Arne Jacobsen, and the late work of Le Corbusier himself, was reinterpreted by groups such as Team X, including structuralist architects such as Aldo van Eyck, Ralph Erskine, Denys Lasdun, Jørn Utzon and the movement known in the United