The decision to build a major seaport at Gdynia village was made by the Polish government in winter 1920, in the midst of the Polish–Soviet War (1919–1920). The authorities and seaport workers of the Free City of Danzig felt Poland's economic rights in the city were being misappropriated to help fight the war. German dockworkers went on strike, refusing to unload shipments of military supplies sent from the West to aid the Polish army, and Poland realized the need for a port city it was in complete control of, economically and politically.