The traditional political class, which had included all the right-wing parties plus the Radical-Socialist Party that symbolized the Third Republic (1871–1940), was completely discredited by 1944. The reasons for this perceived lack of legitimacy included in the first instance the Collaborationism of several of these actors, as well as the failure in the 1930s to put an end to the economic crisis that had characterized the years of the Great Depression. Thus the Democratic Republican Alliance, the main center-right party after the First World War, had opted for Collaborationism, an option endorsed by its leader Pierre-Étienne Flandin plus other members like Joseph Barthélémy.