Question

Which country dominated Eastern Europe after WWII?

Answer 1

The USSR, or United Soviet Socialist Republic dominated the Eastern bloc of Europe and Northern Asia.

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Answer 2

The Soviet Union tightened its grip on eastern european nations and Stalin refused to let go, and economic recovery in E. Europe proceeded along the lines that appealed to the Soviets - political and social changes were LARGELY influenced by the changes made in the Soviet Union.

If that didnt answer your question and you were looking for just a one worded answer, its the Soviet union