Northern Europe in 1397: Kalmar Union

Major lingua francas and heritage languages appear together; minority tongues are named where they structure identity. Through staples, techniques and social meals — not tourist clichés alone — with note of regional variation. State borders and conflicts appear when they shaped culture; the page is not a news wire.

Can diaspora count as Northern Europe? Yes. Overseas communities often conserve and reinvent tradition; they appear in the Today section. Wikipedia article titles resolve to Commons files with reusable licences; attribution lives on the credits page. Raids, trade and settlement from Newfoundland to Baghdad routes.

Denmark, Norway and Sweden under one crown (uneasily). Reformation ties literacy to state churches. Sweden's great-power status collapses. Estonia, Latvia, Lithuania declare republics. Nordics and Baltics take different wartime paths. EU and NATO paths after Soviet collapse. Energy transition and startup cultures lead rankings.