6°14′40″S 155°23′02″E / 6.24444°S 155.38389°E
The North Solomon Islands form a geographical area covering the more northerly group of islands in the Solomon Islands archipelago and includes Bougainville and Buka Islands, Choiseul, Santa Isabel, the Shortland Islands and Ontong Java Atoll. In 1885 Germany declared a protectorate over these islands forming the German Solomon Islands Protectorate. With the exception of Bougainville and Buka, these were transferred to the British Solomon Islands Protectorate in 1900. Bougainville and Buka continued under German administration until the outset of World War I, when they were transferred to Australia, and after the war, were formally passed to Australian jurisdiction under a League of Nations mandate.