 Complete the following phrase:  Józef Piłsudski, an important interwar Polish politician, significantly responsible for Polands regained independence in the aftermath of World War I, planner of the 1919 Polish coup détat attempt in Lithuania and orchestrator of the Żeligowskis Mutiny that brought the disputed Vilnius Region into Poland, often drew attention to his Lithuanian ancestry, and briefly pursued the re-creation of the old Commonwealth. In light of the other great plan for post-World War I order, the Bolshevik intention to spread the communist revolution through the Red Army, his goal of re-constituting the Commonwealth could only be achieved by war. Poland was not alone in its newfound opportunities and troubles. With the collapse of Russian and German occupying authorities, virtually all of the newly independent neighbours began fighting over borders: Romania fought with Hungary over Transylvania, Yugoslavia with Italy over Rijeka, Poland with Czechoslovakia over Cieszyn Silesia, with Germany over Poznań, 