Original sentence: After World War II the region was placed under Polish administration by the Potsdam Agreement under territorial changes demanded by the Soviet Union.In the East Prussian plebiscite of 1920 1,459 inhabitants voted to remain in Germany, 40 for Poland.Most Germans fled or were expelled and replaced with Poles expelled from the Polish territories annexed by the Soviet Union or Ukrainians forced to settle in the area through Operation Vistula in 1947
Edited sentence: After World War II, Pasym once again became part of Poland, under territorial changes demanded by the Soviet Union in the Potsdam Agreement.In the East Prussian plebiscite of 1920, which was boycotted by most Poles, 1,459 inhabitants voted to remain in Germany, 40 for Poland