 Complete the following phrase:  Polands eastern borders had not become a major international issue, as the Western powers accepted the Soviet position in this regard. Decisions concerning the PolishGerman border were made at the Potsdam Conference, where Stalin lobbied for Polands maximal extension in the west, arranged for the Polish government delegation to present their point of view and in the end thwarted the long-standing British policy aimed at keeping some of the lands in question for the future German state. In Poland, the PPR led the massive Recovered Territories propaganda campaign, the Allied-authorized expulsion of ethnic Germans and the repopulation of the region by Poles 