 As a Polish delegate at the Paris Peace Conference and a signatory of the Versailles Treaty , Dmowski exerted a substantial influence on the Treaty 's favorable decisions regarding Poland . On 29 January 1919 , Dmowski met with the Allies ' Supreme War Council for the first time ; his five @-@ hour presentation there , delivered in English and French , was described as brilliant . At the meeting , Dmowski stated that he had little interest in laying claim to areas of Ukraine and Lithuania that were formerly part of Poland , but no longer had a Polish majority . At the same time Dmowski strongly pressed for the return of Polish territories with Polish @-@ speaking majorities taken by Prussia from Poland in 1790s . Dmowski himself admitted that from a purely historical point of view , the Polish claims to Silesia were not entirely strong , but he claimed it for Poland on economic grounds , especially the coal fields . Moreover , Dmowski claimed that German statistics had lied about the number of ethnic Poles living in eastern Germany and that , " these Poles were some of the most educated and highly cultured in the nation , with a strong sense of nationality and men of progressive ideas " . In addition , Dmowski , with the strong backing of the French , wanted to send the " Blue Army " to Poland via Danzig , Germany ( modern Gdańsk , Poland ) ; it was the intention of both Dmowski and the French that the Blue Army create a territorial fait accompli . This proposal created much opposition from the Germans , the British and the Americans , and finally the Blue Army was sent to Poland in April 1919 via land . Piłsudski was opposed to needlessly annoying the Allies , and it has been suggested that he did not care much about the Danzig issue . 
