The Ukraine
No, Germany is a European country.
Moldova has the smallest GDP per capita of any Eastern European nation.
Montenegro is the least populated Eastern European country.
The Magyar settled in Hungary; which is a country in Eastern Europe.
Yes. Before the Soviet Union collapsed it was the largest Eastern European nation not a part of the Soviet Union. However after the Soviet Union collapsed, Ukraine became the largest Eastern European nation (excluding Russia), and the largest European nation wholly in Europe.
Italy and France was not an Eastern European nation that was under communist control
Romania
Hungry
Yes, it is in Eastern Europe.
The Czech Republic is actually the most prosperous country in Eastern Europe.
Czech Republic