The Russian/Soviet Empire.
The Byzantine Empire.
Austria-Hungary
The Byzantium Empire.
It grew from Western Europe to Eastern Europe, then collapsed to Eastern Europe.
It grew from Western Europe to Eastern Europe, then collapsed to Eastern Europe.
It grew from Western Europe to Eastern Europe, then collapsed to Eastern Europe.
The Austrian Empire was associated with having control of Eastern Europe.
Because the Soviet Union controlled Eastern Europe for four decades. This changed when they elected a new leader, Mikhail Horbachev, he gave Eastern Europe more freedom as one of his reforms.
Most of Eastern Europe, including Poland (:
The Roman Empire.
The Byzantine Empire was in Eastern Europe and Asia Minor. The Persian Empire stretched from Libya to Central Asia.