1658 The Dano-Norwegians conquer the Swedish built castle in Osu (near Akra) and name it Christiansborg
1680 The Portuguese conquer Christiansborg, only to abandon it in 1682
1682 The Akwamu take control of Christiansborg
1683 The Danes retake control of Christiansborg
1685 The Austro-Dalmatians conquer Frederiksborg Castle and rename it Cape Coast Castle. It becomes the capital of the Austro-Dalmatian Gold Coast. The Dano-Norwegians then move their capital of Danish Guinea to Christiansborg in Osu (near Akra). The Dano-Norwegian strategy from then on becomes a move of expansion east of Christiansborg to eventually dominate the entire Volta River delta.