Norway-Denmark

State · 1046–1055 CE · at its largest around 1046 CE

Union of the Norwegian and Danish crowns under Magnus the Good, who claimed Denmark after Harthacnut's death; it ended when Magnus died in 1047.

On its lands while it lasted

Oslo (1048 CE): Capital of Kalmar Union (1402–1523), Denmark-Norway (1536–1814), Kingdom of Norway (1814–today).