The PPT originated as a territorial branch of the RDA and rapidly became the political vehicle of the country's non-Muslim intellectuals. Traditional rulers perceived the PPT to be antithetical to their interests and recognized that the local territorial assembly could adversely affect their revenue and power. These factors persuaded traditional rulers to become more active in the UDT, which, because of internal divisions, had changed its name in the late 1950s to the Chadian Social Action (Action Sociale Tchadienne or AST).