The post-war period in France saw a wide array of inventive and creative contributions to the history of design. In particular, socially conscious design was encouraged by new industrial advancements, limitations of available materials, and housing necessities. Jean Prouvé, for example, who was particularly interested in mass production, continued his wartime research for prefabricated structures that could be assembled quickly and accommodate refugees, veterans, and other homeless after the war. Under the senior leadership of Le Corbusier, Charlotte Perriand and Pierre Jeanneret extended their pre-war Modernist visions focusing on social concerns. The economic growth and hope of postwar France is perhaps best illustrated by the whimsical and painterly designs of Jean Royère.