What were the dominant powers of eastern Europe?

Answer 1

Unfortunately all countries in Eastern were not recently dominant powers in Eastern Europe except the Soviet Union. So many new countries have been created recently that it can be said that all of these were not dominant powers. Problem with question is that in past almost all countries in Eastern Europe were part of or carried name of once dominant powers. Examples are the countries that once were part of one of the world's empires, especially the Holy Roman Empire, the Russian empire, the Ottoman empire, Sweden, Austrian-Hungarian empire, the Roman empire, France under Napoleon, the Byzantine empire (lands held in lower Eastern Europe), the Greek empire, or farther back, the Macedonian Empire or the Minoan Empire (the actual extent of which is still not clear). Therefore this question is basically unanswerable unless the definitions within the question are clarified/defined (especially as to what does dominant mean, what time frame is being discussed, and what area constitutes "Eastern Europe".

Answer 2

Major empires that ruled parts of Eastern Europe include the Russian empire.