The Four Year Plan was a series of economic reforms created by the Nazi Party. The main aim of the Four Year Plan was to prepare Germany for self-sufficiency in four years (1936-1940). The Four Year Plan sought to reduce unemployment; increase synthetic fibre production; undertake public works projects under the direction of Fritz Todt; increase automobile production; initiate numerous building and architectural projects; and further develop the Autobahn system. The plan also emphasized building up the nation's military defenses, disregarding the restrictions imposed on Germany by the Treaty of Versailles after the German defeat in World War I.