사회민주주의
During the 1920s and 1930s, social democracy became a dominant tendency within the socialist movement, mainly associated with reformist socialism whilst communism represented revolutionary socialism. Under the influence of politicians like Carlo Rosselli in Italy, social democrats began disassociating themselves from orthodox Marxism altogether as represented by Marxism–Leninism, embracing liberal socialism, Keynesianism and appealing to morality rather than any consistent systematic, scientific or materialist worldview. Social democracy made appeals to communitarian, corporatist and sometimes nationalist sentiments while rejecting the economic and technological determinism generally characteristic of both orthodox Marxism and economic liberalism.