The idea of the book was to demonstrate scientifically that East Karelia and Ingermanland are a natural part of Finland by their geography, history and culture and to legitimize their integration into Finland after Germany's victory in World War II. The new eastern border of Finland was defined to begin from the Gulf of Finland and run via lakes Ladoga and Onega to Onega Bay in the White Sea. An unpublished adaptation of the book also featured the residential areas of Finnic Kvens in the Norwegian county of Finnmark.[1]