"How Scandinavia and Finland became a single peninsula" is a fascinating book that tells about the historical path of the unification of the two Scandinavian countries. The author explores the relationship between Scandinavia and Finland from ancient times to the present day, highlighting important historical events, political relations and cultural influences that contributed to the formation and unification of these lands into a single historical image. The book is an important source of knowledge for understanding the complex history of Scandinavia and its connections with Finland, broadens the reader's horizons and opens new horizons in the study of this unique region of Europe.