History of Poland
The Polish People's Republic ("Polska Rzeczpospolita Ludowa") was established under the rule of the communist Polish United Workers' Party (PZPR). The name change from the Polish Republic was not officially adopted, however, until the proclamation of the Constitution of the Polish People's Republic in 1952.
Polish People's Party &quot;Piast&quot; (1913–31)
Polish People's Party "Piast" or Polish Peasant Party "Piast" (, "PSL Piast") was a political party from the interwar period of the Second Polish Republic (1913–1931). Piast refers to the medieval Piast dynasty, Poland's founding royal house.