Polish Soviet Socialist Republic

The idea assumed the formation of the Soviet republic from the territory of the Second Polish Republic, following Soviet victory in the war, however it was never executed, as Poland won the war in 1921.

[1][2] The idea was proposed in 1920 by the Provisional Polish Revolutionary Committee during the Polish–Soviet War.

It assumed the creation of a constituent republic of the Soviet Union for the Polish population from the conquered territories of the Second Polish Republic, following Soviet victory in the war.

It announced its governance over the state on 30 July 1920, in Białystok, the first major city west of the Curzon Line.

[4] It stated, that the committee planned to create the Soviet republic following the gaining of Bolshevik control of the entirety of Poland.

Poland in March 1919, before the beginning of the Polish–Soviet War .
The Manifesto to the Polish working class of towns and villages by Felix Dzerzhinsky , in which the Provisional Polish Revolutionary Committee had announced its position for Polish SSR.