1397
1397 - The Kalmar Union
In 1397, the Kalmar Union was formed, uniting Denmark, Norway, and Sweden under one monarch. The union lasted until 1523.
Quick Answer
In 1397, Queen Margrethe I formed the Kalmar Union, uniting Denmark, Norway, and Sweden under one monarch. The union lasted until 1523 when Sweden broke away.
What Happened in 1397?
Importantpolitics
The Kalmar Union unites Denmark, Norway, and Sweden
politics
Erik of Pomerania is crowned as union king
Frequently Asked Questions
Common questions about this year in Danish history.