History
Poland is one of Europe's oldest states, dating its Christianisation to 966. The Polish–Lithuanian Commonwealth, formed in 1569, became one of the largest and most populous states in Europe, an elective monarchy of a powerful nobility and, for its time, unusual religious tolerance — until its own political paralysis and its neighbours' ambitions led to the three Partitions of 1772–1795, which erased Poland from the map for 123 years. It was reborn in 1918 after the First World War.
In September 1939 Poland was invaded from the west by Nazi Germany and from the east by the Soviet Union, the opening of the Second World War, and endured an occupation of extreme brutality: around six million Polish citizens killed, half of them Jews murdered in the Holocaust largely carried out on Polish soil; the Soviet Katyn massacre of the officer class; and the 1944 Warsaw Uprising, crushed while the Red Army waited across the river, after which the Germans razed the city.
Post-war borders shifted west with vast population transfers, and four decades as a Soviet-bloc communist state followed, marked by a defiant Catholic Church, repeated workers' revolts, the 1978 election of a Polish pope, and the rise of the Solidarity trade union at the Gdańsk shipyard in 1980. Suppressed under martial law, Solidarity won the 1989 Round Table elections that began the collapse of communism across the bloc. "Shock therapy" and a painful but successful transition followed, then EU and NATO membership and three decades of rapid growth. Politics since 2005 has been polarised between liberals and national conservatives, with a Donald Tusk-led coalition returning to power in late 2023, and Poland is now Ukraine's foremost supporter and one of NATO's biggest military spenders.
- Poland: The Country That Moved — A great medieval kingdom and a vast noble commonwealth — erased from the map for 123 years, reborn in 1918, invaded from both sides in 1939, shifted bodily westward in 1945, and freed by a shipyard strike
