The cinema of the Soviet Union, not to be confused with "Cinema of Russia" despite films in the Russian language being predominant in the body of work so described, includes films produced by the constituent republics of the Soviet Union reflecting elements of their pre-Soviet culture, language and history, albeit they were all regulated by the central government in Moscow. Most prolific in their republican films, after the Russian SFSR, were the Armenian SSR, Azerbaijan SSR, Georgian SSR, Ukrainian SSR, and, to a lesser degree, Lithuanian SSR, Byelorussian SSR and Moldavian SSR. At the same time, the nation's film industry, which was fully nationalized throughout most of the country's history, was guided by philosophies and laws propounded by the monopoly Soviet Communist Party which introduced a new view on the cinema, socialist realism, which was different from the one before or after the existence of the Soviet Union.