Proper noun
East Prussia
(historical) A historical province of Prussia and Germany, since WWII divided between Poland and Russia. A small part of the territory is part of Lithuania.
Although the peasants were no longer tied to the same land as serfs had been, the old paternalistic relationship in East Prussia lasted into the 20th century. Source: Internet
A very few Germans returned to one of their ancestral provinces: about 6,000 settled in Kaliningrad Oblast (former East Prussia ). Source: Internet
By January 1945, they had overrun all East Prussia except for the area around Königsberg. Source: Internet
During expulsion of inhabitants of East Prussia including the sisters of the Catherine Order, over 100 sisters died. Source: Internet
During the same meeting in East Prussia with Count Ciano, Pierre Laval arrived. Source: Internet
During this conflict Russia annexed East Prussia for a while and even took Berlin. Source: Internet