The Potsdam Conference subsequently sanctioned the "orderly and humane" transfer to Germany of individuals regarded as "ethnic Germans" by authorities in Czechoslovakia, Poland, and Hungary. The Potsdam Agreement recognized that these expulsions were already underway and were putting a burden on authorities in the German Occupation Zones, including the re-defined Soviet Occupation Zone. Most of the Germans who were being expelled were from Czechoslovakia and Poland, which included most of the territory to the east of the Oder-Neisse Line. The Potsdam Declaration stated: