Tripartite Convention

The Tripartite Convention of 1899 concluded the Second Samoan Civil War, resulting in the formal partition of the Samoan archipelago into a German colony and a United States territory.
Forerunners to the Tripartite Convention of 1899 were the Washington Conference of 1887, the Treaty of Berlin of 1889, and the Anglo-German Agreement on Samoa of 1899.
Politics prior to the convention.
By the 1870s modern economic conditions were well established and accepted by the Samoans, who had just enough of a government that could be manipulated at will by the foreign business interests in Samoa. After the United States concluded a friendship treaty with Samoa in 1878, Germany negotiated her own Favorite Nation Treaty in 1879 with the same Samoan faction as the U.S., while later in 1879 the Anglo-Samoan treaty was completed with a rival faction. Contentions among the whites in Samoa, plus native factional strife led to side-choosing that became deadly warring with the introduction of modern weapons.
Washington conference of 1887.
To attempt to resolve some of the problems, the United States, Germany, and the United Kingdom agreed to a conference at Washington in June 1887. After the surfacing of serious disagreements among the parties, the conference adjourned without results. Fighting by nationals of the three powers with their factional local allies led to a conflict that was only tempered by the Apia hurricane of 1889 that wrecked warships on the verge of hostilities.
Treaty of Berlin of 1889.
The seriousness of the situation was finally recognized and German foreign minister Count Herbert von Bismarck (chancellor Otto von Bismarck's son) proposed to reconvene the adjourned Washington conference of 1887. He invited U.S. and British representatives to Berlin in April 1889. Bismarck's pragmatic approach proposed protection for life, property, and commerce of the treaty participants and relegated native government and their unstable "kings" to the Samoans, with which the British concurred. The United States insisted on a three-powers authority, while preserving native rights. In the Treaty of Berlin of 1889 thus a joint protectorate or condominium was declared, with a European/American chief justice, a municipal council for Apia, and with the "free right of the natives to elect their Chief or King" as the signatory to the act, thus the treaty professed to recognize a Samoan independent government.
No sooner was the native royal-figurehead appointed (and, after disturbances, restored),than the other chiefs went into rebellion, and civil war ensued. By the end of the 19th century, the failure of the arrangement was freely admitted by the governments of the three powers, since the principal protagonists in Samoa acted directly for their own respective interests, frequently overruling the officials of the condominium. A dissolution of the condominium, created by the "entangling alliance", was now in play.
The Tripartite Convention of 1899.
The German government "had never made a secret of their belief that international control of Samoa was visionary and impractical ... and they began a series of diplomatic moves intended to eliminate it altogether." In April the British government agreed to the formation of a joint commission (British, German, and American) on the matter. The Joint Commission on Samoa was given authority to supercede local authorities and settle matters. Their arrival in May effectively ended hostilities. By July the commission had decided that the islands must be partitioned, as continued joint rule was infeasible. The American commissioner Bartlett Tripp endorsed the view of President McKinley and others that the United States should retain Tutuila and its harbor of Pago Pago. With partitioning of Samoa by then the prevailing understanding, the United States expressed no objections to Britain and Germany coming to a preliminary agreement. The United Kingdom was then embroiled in the Second Boer War and therefore viewed as in a weakened bargaining position, however, the German desire to rapidly conclude the negotiations and bring the western Samoan islands into their colonial empire, had a balancing effect that was clearly evidenced in the agreement as signed.
Kaiser Wilhelm II had accepted an invitation to visit England in November 1899 and his government insisted that an agreement on Samoa should be concluded before his departure for Britain. A settlement was reached at London by 9 November and signed on 14 November. It was therefore this Anglo-German agreement on Samoa in tandem with the informal understanding with the United States that partitioned Samoa. It only remained for the three powers to negotiate a tripartite convention in order to secure the approval of the United States to the whole agreement. The Tripartite Convention of 1899 was duly constituted and documents were signed at Washington on 2 December 1899 by the U.S. Secretary of State John Hay, Baron Theodor von Holleben, German ambassador to the United States, and Sir Julian Pauncefote, British ambassador to the United States, with ratifications exchanged on 16 February 1900.
Positions resulting from the Tripartite Convention of 1899.
United States:
German Empire:
United Kingdom:
These treaty arrangements of the Tripartite Convention of 1899 stayed in place until the outbreak of World War I in 1914.