At the Potsdam Conference , the victorious Allies ceded roughly 25 percent of Germany 's pre-Anschluss territory to Poland and the Soviet Union . The German population in this area was expelled , together with the Germans of the Sudetenland and the German populations scattered throughout the rest of Eastern Europe . Between 1.5 and 2 million are said to have died in the process , depending on source . As a result , the population density grew in the " new " Germany that remained after the dismemberment
Potsdam Conference
Potsdam Conference
Reconstruction of Germany