The central european country of Poland under the control of the Soviet Union after World War 2.
The USSR took Poland from Nazi rule and established it as a territiory called Poland SSR.
A misconceived word, as Poland was never officially a part of Soviet Union, and thus was named 'People's Republic of Poland', during the communist reign. Oh, and even if, it would have been 'Polish SSR'.
- Do you know when the Poland SSR ceased to exist?
- Poland what? Oh, you must mean the People's Republic of Poland! It officially fell on 31 December, 1989.