Russia.
Italy
Estonia.
Estonia was settled around 8500 BC. Estonia was ruled initially by Denmark before being conquered in 1227 by the Danes and Germans.
Estonia
Estonia was part of the USSR therefore it entered September 1939.
World War 2 lasted exactly from 1939 to 1945. During this war, Germany went on a very wide-spread campaign, invading much of Europe and western Asia. Poland, Belgium, France, the Netherlands, Romania, Yugoslavia, Greece, Serbia, Crete, and Estonia were all successfully conquered during this widespread invasion.
estonia
The nation which lies between Estonia and Lithuania is Latvia.
Tripoli was the last North African nation conquered by the Europeans.
Italy
The USSR.