Lithuania has never been a part of Poland.
Kaliningrad:(part of Russia) and Lithuania
The Kaliningrad Oblast is a Russian exclave located between Poland and Lithuania, along the Baltic Sea. It is geographically separated from the rest of Russia, with Poland to the south and Lithuania to the north and east. Kaliningrad has a strategic significance due to its location on the Baltic coast.
Neal Zaslaw was born in 1939.
Kaliningrad
Because the victorious Allies of World War 2 wanted it that way that Prussia is part of Poland, Russia, and Lithuania.
Poland and Lithuania are coutries themselves, not parts of another.
Kaliningrad Oblast
The Enclave of Kaliningrad
Sweden, Denmark, Russia, Germany, Latvia, Lithuania, Estonia and Finland
Poland, Lithuania, Latvia, Estonia and Finland
Kaliningrad