The Anglo-German Declarations about the Western Pacific Ocean were agreements made in 1886 between the British Empire and German Empire regarding their respective spheres of interest in the Pacific. The declarations formalised the boundaries between the protectorates of British New Guinea and German New Guinea, which had been declared in 1884, and laid out a framework for the colonisation of other Pacific Islands as well as commercial and legal interactions.
Great Britain and Germany agreed in 1885 to negotiate a common declaration about their spheres of interest in the western Pacific. Previously, German plans of an annexation of New Guinea, outlined in a German newspaper, and the rapid development of both German and French trade led to unrest among Australian politicians. Both powers wanted to protect the interests of their particular citizens and enterprises, but the western Pacific was not important enough for them to risk a conflict about it. The negotiation about the declarations began in 1885, they were led between Mr. Thurston for Great Britain and Mr. Krauel for Germany. In April 1886, they were signed by Herbert von Bismarck, State Secretary in the German Foreign Office, and the British ambassador to Germany, Sir Edward Malet.
Two declarations were made:
The declaration was valid in the whole area between the 15th parallel of north latitude and the 30th parallel of south latitude, and between the 165th meridian of longitude west and the 130th meridian of longitude east. The border between the spheres of interest should be a line beginning near Mitre Rock in North East New Guinea, on the 8th parallel of south latitude, then it should follow the points:
The area in the north and west of this line should be the German, the area in the south and east should be the British sphere of influence. The islands of Samoa, Tonga and Niue were excluded. Also excluded were areas under control of other Great Powers.
The second declaration guaranteed free trade and enterprise and freedom of establishment and domicile to the citizens of both nations in the whole area. Disputed claims to land prior to the declaration of sovereignty or protectorate, should be settled by a mixed commission, unless the plaintiff did not request the settlement by the local authority alone. Great Britain and Germany should treat each other as most-favoured nation, equal law for citizens of each nation in the area of the other one should be applicated. Religious freedom should be granted. No convicts should be brought in the area and no penal colonies should be founded.
After the declaration, Great Britain colonised the Gilbert and Ellice Islands and the British Solomon Islands, Germany took over the Caroline Islands, Nauru and Bougainville. The British rule lasted up to the 1970s, while the German colonial rule ended in 1920 and was followed by League of Nations mandates, after World War II United Nations Trust Territories, which ended in Nauru in 1968.