In 1945 the eastern part of the island , together with the city and port of Swinemünde ( now Świnoujście ) , was assigned to Poland under border changes promulgated at the Potsdam Conference , and the surviving German inhabitants of the town were expelled to the west . The territory was repopulated with Poles , most of whom had been expelled by the Soviets from what had been eastern Poland
Potsdam Conference
Potsdam Conference
Usedom