"East Prussia." YourDictionary, n.d. Web. 17 November 2018. <https://www.yourdictionary.com/east-prussia>.
East Prussia. (n.d.). Retrieved November 17th, 2018, from https://www.yourdictionary.com/east-prussia
A historical region and former province of Prussia on the Baltic Sea in present-day Poland and Russia. From 1919 to 1939 it was separated from Germany by the Polish Corridor. After World War II the area was divided between Poland and the USSR.