 The internal struggles and civil strife of the Age of the Sturlungs led to the signing of the Old Covenant in 1262, which ended the Commonwealth and brought Iceland under the Norwegian crown.Possession of Iceland passed from the Kingdom of Norway (872–1397) to the Kalmar Union in 1415, when the kingdoms of Norway, Denmark and Sweden were united.After the break-up of the union in 1523, it remained a Norwegian dependency, as a part of Denmark–Norway.