Slovak Republic, Slovakia - a landlocked republic in central Europe; separated from the Czech Republic in 1993

Romania, Roumania, Rumania - a Balkan republic in southeastern Europe

Poland, Polska, Republic of Poland - a republic in central Europe; the invasion of Poland by Germany in 1939 started World War II

Ukraine, Ukrayina - a republic in southeastern Europe; formerly a European soviet; the center of the original Russian state which came into existence in the ninth century

chain of mountains, mountain chain, mountain range, range of mountains, range, chain - a series of hills or mountains; "the valley was between two ranges of hills"; "the plains lay just beyond the mountain range"