Description
The boundary of Poland was redrawn again after World War II, with territories East of the Curzon Line, a huge part of the pre-war territory, given to the Soviets and German territory, East of the Oder and Nesse Rivers, given to Poland in reparation.
Source
Hans Roos, A History of Modern Poland: From the Foundation of the State in the First World War to the Present Day (London, Eyre & Spottiswoode, 1966).