16th century in Denmark

former country. personal union of the three kingdoms of Denmark, Sweden and Norway (1397–1523)

Denmark–Norway was a 16th-to-19th-century multi-national and multi-lingual real union consisting of the Kingdom of Denmark, the Kingdom of Norway (including the then Norwegian overseas possessions: the Faroe Islands, Iceland, Greenland, and other possessions), the Duchy of Schleswig, and the Duchy of Holstein. The state also claimed sovereignty over three historical peoples: Frisians, Gutes and Wends. Denmark–Norway had several colonies, namely the Danish Gold Coast, Danish India (the Nicobar Islands, Serampore, Tharangambadi), and the Danish West Indies.

war that was fought in the years 1504 to 1512

the 16th century transition to Lutheranism in the realms ruled by the Copenhagen-based House of Oldenburg

1523 battle of the Swedish War of Liberation