Re:Moscow Publishes Photocopies of Molotov-Ribbentrop Pact, ...
by jagger11 on Saturday June 01, 2019 @03:01PM
(#20070861)
Polish borders as of 1918 are here - https://pl.wikipedia.org/wiki/Historia_Polski_(1918%E2%80%93...
Soviet Union decided to attack, it lost the war, it had to ceede territory.
When Soviets crossed Polish borders in 1939, the Polish statehood was exactly in the same defunct state as the Soviet in 1919-21.