 Complete the following phrase:  The Silesian Voivodeship  was an autonomous province voivodeship of the Second Polish Republic. The bulk of its territory had formerly belonged to the GermanPrussian Province of Silesia and became part of the newly reborn Poland as a result of the 1921 Upper Silesia plebiscite, the Geneva Conventions, three Upper Silesian Uprisings, and the eventual partition of Upper Silesia between Poland, Germany and Czechoslovakia. The remainder had been the easternmost portion of Austrian Silesia see Cieszyn Silesia which was partitioned between Poland and Czechoslovakia following the collapse of Austria-Hungary, the 