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 Party
The party had its origins in the national associations that were established during the 1848 revolution, but was formally established when the first Reichstag was elected in 1871. It won 13 seats in the elections, the lowest number of seats it held in the Reichstag until World War I. Its best performance was in the 1907 elections, when it won 20 seats.