On which date did the Soviet Union invade Poland from the east in 1939?

Answer and explanation

Correct answer: A. 17 September

  1. Step 1: Soviet troops crossed the border on 17 September 1939, under the secret protocol of the August pact. Answer: 17 September. Why not the others: 1 September, 3 September and 22 June don't fit.

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On which date did the… | Egzamin Maturalny (Matura Poland)