~Hello there! ^_^
Your question: What countries are considered Eastern Europe..?
Your answer: There are 21 countries that are considered as a part of Easter Europe:
1) Macedonia
2) Kosovo
3) Albania
4) Bosnia and Herzegovina
5) Montenegro
6) Serbia
7) Belarus
8) Ukraine
9) Bulgaria
10) Slovakia
11) Slovenia
12) Estonia
13) Latvia
14) Lithuania
15) Croatia
16) Moldova
17) Romania
18) Hungary
19) Poland
20) Czech Republic
21) Russia
Hope this helps! :D
