Soviet–Polish border changes in the 20th century

E764732

historical event territorial change

The Soviet–Polish border changes in the 20th century were a series of territorial shifts and redrawn frontiers between Poland and the Soviet Union, driven by wars, treaties, and geopolitical realignments before, during, and after World War II.

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Observed surface forms (1)

Surface form	Occurrences
Second Polish Republic–Soviet Union border	1

Statements (50)

Predicate	Object
instanceOf	historical event ⓘ territorial change ⓘ
affectedRegion	Belarusian–Polish borderlands NERFINISHED ⓘ Białystok Region NERFINISHED ⓘ Eastern Galicia NERFINISHED ⓘ Lviv Region NERFINISHED ⓘ Polesia NERFINISHED ⓘ Ukrainian–Polish borderlands NERFINISHED ⓘ Vilnius Region NERFINISHED ⓘ Volhynia NERFINISHED ⓘ
cause	Allied decisions during World War II ⓘ Nazi–Soviet cooperation in 1939 NERFINISHED ⓘ Polish–Soviet War NERFINISHED ⓘ Soviet security interests ⓘ collapse of empires after World War I ⓘ
countryInvolved	Poland NERFINISHED ⓘ Soviet Union ⓘ
demographicImpact	deportations and migrations of Ukrainians, Belarusians, and Lithuanians ⓘ expulsion and flight of Germans from territories assigned to Poland ⓘ resettlement of Poles from former eastern territories to western and northern Poland ⓘ
endPeriod	1991 ⓘ
keyTreaty	1951 Polish–Soviet territorial exchange NERFINISHED ⓘ German–Soviet Boundary and Friendship Treaty NERFINISHED ⓘ Molotov–Ribbentrop Pact NERFINISHED ⓘ Potsdam Agreement NERFINISHED ⓘ Tehran Conference agreements NERFINISHED ⓘ Treaty between the Republic of Poland and the USSR on the Soviet–Polish State Frontier (1945) NERFINISHED ⓘ Treaty between the Republic of Poland and the USSR on the Soviet–Polish State Frontier (1958) NERFINISHED ⓘ Treaty of Riga NERFINISHED ⓘ Yalta Conference agreements NERFINISHED ⓘ
location	Eastern Europe NERFINISHED ⓘ
mainParticipants	Polish People’s Republic NERFINISHED ⓘ Second Polish Republic NERFINISHED ⓘ Soviet Union NERFINISHED ⓘ
politicalContext	Sovietization of annexed territories ⓘ creation of the Polish People’s Republic as a Soviet-aligned state ⓘ
predecessorBorder	border of the Second Polish Republic (1918–1939) ⓘ
result	establishment of the Curzon Line as the de facto eastern border of Poland ⓘ ethnic homogenization of postwar Poland ⓘ incorporation of eastern Polish territories into the USSR ⓘ large-scale population transfers ⓘ shift of Poland’s borders westward ⓘ
significantEvent	Cold War NERFINISHED ⓘ Polish–Soviet War NERFINISHED ⓘ World War II NERFINISHED ⓘ
startPeriod	1918 ⓘ
successorBorder	border between Poland and the Soviet republics of Ukraine, Belarus, and Lithuania ⓘ modern borders between Poland and Belarus ⓘ modern borders between Poland and Lithuania ⓘ modern borders between Poland and Ukraine ⓘ

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Kovel → partOfHistoricalEvent → Soviet–Polish border changes in the 20th century ⓘ

Zbruch → usedAsBorder → Soviet–Polish border changes in the 20th century ⓘ

this entity surface form: Second Polish Republic–Soviet Union border