After World War 2 what European countries became communist?

Poland, Czechoslavakia, Yugoslavia, Hungary, Rumania, East Germany, and Bulgaria. Yugoslavia, under Marshal Tito, became independent from the Soviet Union but was a Communist state nevertheless. Rumania, in the 1950's was taken over by Nicholai Czechescu and his wife. They took an independent role in foreign policy and withdrew from the Warsaw Pact. The were still devout Communists and were tyrants. They were executed in 1989.