| In 1884 Germany annexed north-east New Guinea and the Bismarck Archipelago, and in 1886 they extended their rule over the North Solomon Islands, covering Bougainville, Buka, Choiseul, Santa Isabel, the Shortlands and Ontong Java atoll. In 1900, under the terms of the Tripartite Convention of 1899, Germany ceded the Northern Solomon to Britain, minus Buka and Bougainville, the latter becoming part of German New Guinea despite geographically belonging to the Solomons archipelago. | | In 1884 Germany annexed north-east New Guinea and the Bismarck Archipelago, and in 1886 they extended their rule over the North Solomon Islands, covering Bougainville, Buka, Choiseul, Santa Isabel, the Shortlands and Ontong Java atoll. In 1900, under the terms of the Tripartite Convention of 1899, Germany ceded the Northern Solomon to Britain, minus Buka and Bougainville, the latter becoming part of German New Guinea despite geographically belonging to the Solomons archipelago. |