In his most important volumes (most of which attracted public attention only after 1944),[REF] Pătrășcanu combined his commitment to Marxism-Leninism with his sociological training, producing an original outlook on social evolution (focusing on major trends in Romanian society from the time of the Danubian Principalities to his day) [REF].
Pătrășcanu contended that the first relevant social conflict had occurred in 1821, at the time of Tudor Vladimirescu's Wallachian uprising.