Kalmar Union

Timeline

1. 1387–1396Denmark · DenmarkAfter Olaf's death, Margaret successively became regent of Denmark and Norway, and at the request of the Swedish nobility opposed Albert. She adopted her grandnephew Eric of Pomerania: in 1389 Eric became king in Norway, and in 1396 received oaths of allegiance in Denmark and Sweden. The personnel conditions for a personal union of the three realms were now complete.
2. 1397Kalmar · SwedenMargaret convened the councils and nobles of the three realms at Kalmar. On June 17 Eric received a joint coronation for the three realms, and the personal union was formally established. Two sets of documents were produced at the meeting: a coronation charter favoring hereditary succession and royal centralization, and a union charter emphasizing each realm's laws and noble counsel, sowing the seeds of later conflict.
3. 1397–1412Copenhagen · DenmarkAfter the coronation Margaret still held real power as regent; the three realms coordinated abroad while each kept its own laws at home. The union was intended to counter the Hanseatic League and consolidate Northern European royal authority. Eric continued this structure after coming of age, but tensions between royal centralization and noble self-government in Sweden and Norway had already emerged.
4. 1412–1523Scandinavia · Northern EuropeIn the fifteenth century the union repeatedly broke down over taxation, war, and the appointment of governors, and Sweden several times installed its own rulers. In 1523 Gustav Vasa was elected king of Sweden, ending the three-realm personal union. The Danish-Norwegian union continued into the modern era, showing that the Kalmar system left a lasting institutional legacy in the formation of Northern European states.