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.
Poland
During World War I, all the Allies agreed on the reconstitution of Poland that United States President Woodrow Wilson proclaimed in Point 13 of his Fourteen Points. A total of 2 million Polish troops fought with the armies of the three occupying powers, and 450,000 died. Shortly after the armistice with Germany in November 1918, Poland regained its independence as the Second Polish Republic ("II Rzeczpospolita Polska"). It reaffirmed its independence after a series of military conflicts, the most notable being the Polish–Soviet War (1919–21) when Poland inflicted a crushing defeat on the Red Army at the Battle of Warsaw, an event which is considered to have halted the advance of Communism into Europe and forced Vladimir Lenin to rethink his objective of achieving global socialism. The event is often referred to as the "Miracle at the Vistula".