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Largest evacuation of civilians

Largest evacuation of civilians
Who
Potsdam Agreement
What
2000000 people
Where
East Prussia,
When
1945
An estimated 2 million Germans were evacuated from East Prussia in 1945 when the region was ceded to the Soviet Union under the terms of the Potsdam Agreement. The German population of East Prussia was replaced by Russians, Belorussians, Ukrainians and other Soviet citizens.