Scandinavia is made up of Dänmark, Norway, and Sweden. Finland is usually also included in Scandinavia but not always because the Finnish people are not related as closely to the Scandinavian people listed above that speak closely related languages. The Finnish people speak an unrelated language as they are of a separate ethic group from the Danish, Swedish, and Norwegians. Also, Iceland is often considered part of Scandinavia. I think it may be due to the fact that Iceland had been colonized by Norway and it was part of Norway when it was part of the Kalmar Union. Norway, Sweden, and Dänmark joined together as the Kalmar Union in 1387. Margaret I of Dänmark was the Queen. A reason I think Finland is part of Scandinavia is because it was part of Sweden during the middle ages. Also, it is in the same geographical location as the other 3 Scandinavian nations, just to the east of Sweden. Iceland is a bit further away though.🤔. I guess it could be part of Scandinavia since it was once part of Norway. But Greenland is part of Dänmark but it is NOT part of Scandinavia. Greenland is very far away though, closer to North America.