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Polity · 1918 – 1945

Second Polish Republic

波兰第二共和国

Polity · 1918 – 1945 · Century precision · 52.23° N, 21.01° E

The Second Polish Republic, officially the Republic of Poland, was the Polish state that existed between 7 October 1918 and 6 October 1939, founded in the last stage of the Great War. It was taken in 1939 on the eve of its twenty-first anniversary, invaded by Nazi Germany, the Soviet Union and the Slovak Republic at the opening of the European war, and its government went into exile in Paris and then London. After the regional wars, above all the victorious war against Soviet Russia, the borders were fixed in 1922: Czechoslovakia, Germany, the Free City of Danzig, Lithuania, Latvia, Romania and the Soviet Union stood around it, and the Polish Corridor at Gdynia gave it the Baltic Sea. In 1938 it was the sixth country of Europe, with 25.7 million people in 1921 and 35.1 million in 1939, almost a third of them minorities. Jozef Pilsudski, who returned with a coup in 1926, ruled to 1935, and an authoritarian constitution followed in that spring.

Key facts

  • It existed between 7 October 1918 and 6 October 1939
  • The Polish-Soviet War fixed its eastern borders, finalised in 1922
  • The 1921 census counted 25.7 million people, 35.1 million by 1939
  • Almost a third of the population were minorities
  • Jozef Pilsudski staged a coup in 1926 and ruled to his death in 1935
  • Germany, the Soviet Union and Slovakia invaded it in 1939

Record

Capital: Warsaw

Notable figures

  • Józef Piłsudski
  • Ignacy Mościcki
  • Józef Beck

Sources

Single source — details may be incomplete.

  1. Wikidata Q207272 — Second Polish RepublicCC0-1.0

Related

CiteWhenAtlas — History in Motion, “Second Polish Republic” (2026). https://whenatlas.com/entity/polity.q207272

Reuse this data: open dataset (GeoJSON / CSV, CC BY 4.0)

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