All were members of the Warshaw Treatise.
Poland>Slovakia>Hungary>Romania>Bulgaria or Poland>Ukraine>Romania>Bulgaria
They were among the communist countries controlled by the Soviet Union
The Warsaw Pact.
All are countries in the Eastern Europe.
Bulgaria, Czechoslovakia, Hungary, Poland, Romania
The Soviet Satellite Nations were: East Germany, Czech, Poland, Soviet Union, Hungary, Romania, Yugoslavia, Bulgaria and Albania. The Soviet Satellite Nations were: East Germany, Czech, Poland, Soviet Union, Hungary, Romania, Yugoslavia, Bulgaria and Albania.
Today, yes.
Albania, Bulgaria, Czechoslovakia, Hungary, Poland, and Romania
Warsaw Pact.
PolandBulgariaRomania
After WWII, Poland, Hungary, Czechoslovakia, Bulgaria, and Romania became the USSR's satellite states.