Following World War I (1914-1918) was a period of regrowth for many cities in Europe.  The war itself introduced a theme of technological and social advancement that brought about many changes, including residential architecture.  To account for growing populations, governments began to implement policies that called for the development of public housing projects.  Throughout the inter-war period, such apartment blocks were built filling these expanding urban areas.  Coinciding with this was the Modernist movement.  As reflected in its architecture, this period was defined by individuals who sought new ideas and social norms.  In addition, the war left many European cities in search of a new identity with new aspirations.  The development of new architecture was an opportunity to express this.  Printed work of many of prominent Modernist architects, such as Le Corbusier, spread across Europe and became an influence on designers.  With the construction of new public housing buildings, architects were faced with the task of articulating the architectural language for urban areas.  They had to determine the appropriate manner in which to apply Modernist principles.  This manifested in a number of ways in different cities.