German–Spanish Treaty (1899)
Borders of German New Guinea before (in blue) and after (in red) the 1899 German-Spanish treaty
|Signed||12 February 1899|
The German–Spanish Treaty of 1899, (Spanish: Tratado germano-español de 1899; German: Deutsch-Spanischer Vertrag 1899) signed by the German Empire and the Kingdom of Spain, involved Spain selling the vast majority of its remaining Pacific Ocean islands to Germany for 25 million pesetas (equivalent to 17 million Marks).
During the 19th century, the Spanish Empire lost most of its colonies to independence movements. Then came the Spanish–American War in 1898, in which Spain lost most of its remaining colonies. Cuba became independent while the United States took possession of Puerto Rico along with the Philippines and Guam from Spain's Pacific Ocean colonies the Spanish East Indies. This left Spain with only its African possessions of Spanish Sahara, Ifni, and Spanish Guinea, and with about 6,000 tiny, sparsely populated, and not very productive Pacific islands. These latter were both ungovernable, after the loss of the administrative center of Manila, and indefensible, after the destruction of two Spanish fleets in the Spanish–American War. The Spanish government, therefore, decided to sell the remaining islands. Germany lobbied the Spanish government to facilitate the sale of the islands to Germany.
The Spanish Prime Minister Francisco Silvela signed the treaty on 12 February 1899. It transferred the Caroline Islands and the Northern Mariana Islands to Germany, which then placed them under the jurisdiction of German New Guinea. Palau, at the time considered part of the Carolines, was also occupied and during the following years the Germans started up mining there.
In October 1914, during World War I, the Empire of Japan invaded and conquered many of these German possessions. After the war, they became in 1919 the South Seas Mandate of the League of Nations, under control of the Japanese. During and after World War II the United States took control of the former Spanish and German archipelagos in the Pacific.
Still a "Spanish Micronesia"?
The hypothesis appeared on 5 March 1948, when the state lawyer and CSIC researcher Emilio Pastor y Santos wrote a letter claiming that Spain should establish three naval stations in the Carolinas, Marianas and Palaos, following article 3. He suggests Saipan, Yap and Koror. In October, Pastor announces that there are still four islands under Spanish sovereignty, as they were forgotten in the 1899 treaty. In 1950, Pastor publishes the book Territorios de soberanía española en Oceanía, 'Territories of Spanish sovereignty in Oceania'. In 12 January 1949, the question is dealt with in a Council of Ministers, but
...while the subject is not clear, it becomes to wait before dealing with the United States or the friendly powers taking part of the United Nations, since Spain has no contacts with the UN and it would be this organization which would solve the final lot of those Micronesian islands owned by Japan.— 
However, a report of 4 January 1949 from the legal advice of the Spanish Ministry of Foreign Affairs "estimated that any hypothetical right of Spain over those islands would have been destroyed by the later trust regimes, that were those established after World War I with the transfer of those territories to Japan and, after World War II, with their attribution to the United States".
In 2014, the Spanish government closed any speculation on the issue of Spanish possession in the Pacific with an answer in the Congress to the deputy Jon Iñarritu. According to its interpretation, Spain yielded in 1899 every remaining possession in the Pacific. It added that "those islands were traditionally linked to the Carolinas and it ihas to be understood that , if the latter were yielded, the former were yielded too" and "the Spanish attitude between 1899 and 1948 shows that the intent of Spain by signing the treaty with Germany was to transfer to it all its possessions in the Pacific." It would be inconsistent "that Spain would have wanted to yield the Carolinas, the Palaos and the Marianas, but would have reserved the sovereignity over a few little islands of scarce economic value over which it had never exercised its factual sovereignty", concluding that Spain does not preserve any sovereignty over Pacific islands.
- "Palau profile – timeline". BBC. 3 March 2015. Retrieved 9 November 2015.
- "Micronesia Española, Islas españolas en el Pacífico" (in Spanish). Lqt Defensa. 3 March 2012.[better source needed]
- "El Gobierno zanja toda especulación sobre el mantenimiento de posesiones españolas en el Pacífico" (in Spanish). Europa Press. 20 April 2014.
- Manuel P. Villatoro (23 September 2016). "Las islas hispánicas perdidas por todo el mundo: así es el recuerdo de que España fue un imperio" (in Spanish). ABC.
- María Cristina; Francisco Silvela (13 June 1899). "Real decreto autorizando al Ministro de Estado para presentar á las Cortes un proyecto de ley concediendo autorización al Gobierno para ceder á Alemania las islas Carolinas, las Palaos y las Marianas, excepto Guam" (PDF) (in Spanish). II (164). Gaceta de Madrid: 905. Retrieved 17 July 2020. Cite journal requires
- María Cristina; Francisco Silvela (29 June 1899). "Ley autorizando al Gobierno para ceder al Imperio de Alemania las islas Carolinas con las Palaos y las Marianas, excepto Guam" (PDF) (in Spanish). II (180). Gaceta de Madrid: 1151. Retrieved 17 July 2020. Cite journal requires
- Francisco Silvela; Joseph von Radowitz (1 July 1899). "Tratado cediendo al Imperio alemán los Archipiélagos de Carolinas, Palaos y Marianas, excepto la isla de Guam" (PDF) (in Spanish). III (182). Gaceta de Madrid: 1. Retrieved 17 July 2020. Cite journal requires
- Pastor y Santos, Emilio. Territorios de soberanía española en Oceanía. Instituto de Estudios Africanos, Consejo Superior de Investigaciones Científicas. Madrid, 1950.