The north european plain runs through these countries. (select all that apply)

albania
belarus
estonia
poland
romania
russia

The correct answers are: Belarus, Poland, and Russia.

The North European Plain is a vast plain stretching from the northern central parts of the continent up to the Ural Mountain Range. This plain starts from the northern parts of Germany goes through Poland, Belarus, and through the northern half of the European part of Russian. The landscape varies from grasslands to dense forests, but it is in general a very big lowland that covers very big portion of the European mainland.