The doctrine of socialist realism in other People's Republics, was legally enforced from 1949 to 1956. It involved all domains of visual and literary arts, though its most spectacular achievements were made in the field of architecture, considered a key weapon in the creation of a new social order, intended to help spread the communist doctrine by influencing citizens' consciousness as well as their outlook on life. During this massive undertaking, a crucial role fell to architects perceived not as merely engineers creating streets and edifices, but rather as "engineers of the human soul" who, in addition to extending simple aesthetics into urban design, were to express grandiose ideas and arouse feelings of stability, persistence and political power.