Original sentence: Historical Eastern Germany was split between Poland, Russia, and Lithuania and repopulated with settlers of the respective ethnicity.Not only was the Drang nach Osten reversed, but much of the demographic and cultural outcome of the Ostsiedlung was terminated as well.The Oder-Neisse line has been gradually accepted to be the eastern German boundary by all post-war German states (East and West Germany as well as reunited Germany), dropping all plans of (re-)expansion into or (re-)settlement of territories beyond this line.The massive expulsion of German populations east of the Oder-Neisse line in 1945-48 on the basis of decisions of the Potsdam Conference were later justified by their beneficiaries as a rollback of the Drang nach Osten
Edited sentence: After the failed attempt by the German state to exterminate several non-German nations in the East Drang nach Osten was in some parts reversed, and demographic and cultural outcome of the Ostsiedlung which led to loss of land, status and numeric majority by locals to Germans  was terminated in several areas as well.However groups calling for a new takeover of those territories by Germans continue to exist within German political spectrum.Some but not all Germanised territory that originally was part of non-German people and states was split between Poland, Russia, and Lithuania and repopulated with settlers of the respective ethnicity.The Oder-Neisse line has been gradually accepted to be the eastern German boundary by all post-war German states (East and West Germany as well as reunited Germany), dropping all plans of expansion into territories beyond this line.The population transfer of German population to German state beyond Oder-Neisse line in 1945-48 on the basis of decisions of the Potsdam Conference were  a rollback of the Drang nach Osten