Reformers lead a failed attempt against the partitioning powers of Prussia, Russia, and Austria. Poland is no longer an independent state.
Poland is restored as an independent state following World War I.
Nazi Germany invades Poland. The Soviet Union then invades Poland from the east, resulting in a divided Poland controlled by Germany and the Soviet Union.
Warsaw is captured by Soviet forces in January. Poland’s new borders are determined at the Potsdam Conference.
Under the Stalinist leadership of Boleslaw Bierut, Poland becomes a Communist People’s Republic following Soviet-run elections.
Poland becomes a part of the Warsaw Pact military alliance.
Poland joins NATO.
Poland is one of 10 new states to join the European Union.