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The Treaty of Peace and Friendship of 1904 between Chile and Bolivia was signed in Santiago de Chile on October 20, 1904, in order to delineate the boundary through 96 specified points between Cerro Zapaleri and Cerro Chipe and to regulate the relations between the two countries 20 years after the end of the War of the Pacific. The Bolivia–Chile boundary has a length of about and is demarcated by pillars located in the Andes. Most of the boundary consists of straight-line segments between high mountain peaks. From the Argentina–Bolivia–Chile tripoint of Cerro Zapaleri, it extends northward through more than five degrees of latitude to the Peru–Bolivia–Chile tripoint at 17° 29' 55.0" S. latitude and 69° 28' 28.8" W. longitude. ==Historical background== When Bolivia became independent from Spain on August 6, 1825, it took possession of the territories that corresponded to its colonial administration in accordance with the ''uti possidetis juris'' of 1810. Bolivia claimed the maritime territory westward from the Andes to the Pacific Ocean between the Río Salado on the south and the Río Loa on the north, which included part of the Atacama Desert. In 1842 Chile made claims to the desert area following the discovery and exploitation of nitrate deposits. With negotiations extending over a period of several decades, a decision was reached finally between Bolivia and Chile in a treaty dated August 10, 1866. Article I of the treaty of 1866 stated that "the line of demarcation of boundaries between Chile and Bolivia in the desert ''…shall henceforth be, the parallel of latitude 24 degrees South.''" On December 5, 1872, a subsequent treaty confirmed the 24th parallel as the boundary between the two states. In accordance with various other treaties, Bolivia was given an equal share of revenues from guano deposits located in Chilean territory between the 24th and 25th parallels; and Chile had the same concession in Bolivian territory between the 24th and 23rd parallels, which area included the port of Antofagasta. In 1872, the Government of Bolivia granted a concession to a British firm to develop the nitrate deposits in Bolivian territory for a period of 15 years. The following year the Secret treaty of alliance between Peru and Bolivia of 1873, called defensive by the signer, was signed at Lima in order to guarantee the independence, sovereignty, and integrity of their respective territories, though this treaty was kept secret and not communicated to Chile. Therefore, Chile interprets this pact as a secret alliance against them. In 1878 Bolivia placed a minimum tax on the production of the nitrate firm. In the intervening time, the concession had been transferred to a Chilean company making the leveling of the tax a violation of the treaty of 1866, in which Bolivia had agreed not to increase taxes on the industry without the approval of Chile. Chile asked Peru for a proclamation of neutrality, but as the latter did not respond Chile declared war on both Peru and Bolivia on April 5, 1879 precipitating the so-called War of the Pacific. The Treaty of Ancón ended the conflict between Peru and Chile on October 20, 1883, and a truce was signed by Bolivia and Chile at Valparaíso on April 4, 1884. In accordance with the terms of the truce, Chile was to administer Bolivian territory from the 23rd parallel northward to the Rio Loa, thus depriving Bolivia of the northern part of the province of Antofagasta and a Pacific littoral. The eastern boundary of the territory was given as a series of straight-line segments extending northward between stated points from Cerro Zapaleri (Cerro Sapaleri) through the two thirds of the northeastern slope of Cerro Licancabur, Cerro Cabana, most southerly bay head of Salar de Ascotan, Volcan Oyahue (Volcan Ollague) and Volcan Tua, and then by the boundary between the former Peruvian province of Tarapaca and Bolivia. In 1889, a railroad constructed inland from Antofagasta reached Uyuni on the Bolivian plateau. On May 18, 1895, a treaty signed by Chile and Bolivia confirmed the latter's loss of the territory between the 23rd parallel and the Rio Loa. A second treaty also was signed on the 18th by the two states that promised to transfer Tacna and Arica to Bolivia should Chile obtain them, or if not, the Caleta de Vitor, a small port south of Arica. On October 20, 1904, a peace treaty between Chile and Bolivia delimited the boundary through 96 specified points between Cerro Zapaleri and Cerro Chipe. Provision was made in the treaty for demarcation and boundary pillars were erected shortly thereafter. Chilean sovereignty was recognized by Bolivia over the territory from the ocean to the existing Argentine boundary between the 23rd and 24th parallels. Chile also recognized the right of Bolivia in perpetuity to commercial transit through its territory and ports, to be regulated by special agreements. The Salas-Pinilla Protocol of 1907 made two modifications of the 1904 boundary, although ratifications of the protocol were not exchanged until 31 years later. A change was made between Cerro Chipapa and Volcan Olca in favor of Chile in order to keep the Collaguasi railroad, which connected with the Antofagasta-Uyuni railroad, entirely within Chilean territory. In return a second change transferred a small parcel of Chilean territory to Bolivia between Cerro de Patalani and Alto de Panantalla. In 1913, a railroad was completed between Arica and La Paz, which gave Bolivia access to the Pacific Ocean by means of a second railroad. In accordance with the terms of the Treaty of Ancón, Peru ceded unconditionally to Chile the littoral Tarapacá Province, bounded north by the Rio Camarones, south by the Rio Loa, east by Bolivia, and west by the Pacific Ocean. The provinces of Tacna and Arica, bounded north by the Rio Sama from its source in the mountains adjoining Bolivia to the sea, south by the Rio Camarones, east by Bolivia and west by the ocean, were to be administered by Chile for a 10-year period, followed by a plebiscite to determine whether these provinces would remain permanently under Chilean administration or if they would continue to be part of Peruvian territory. Efforts to reach an agreement on the terms of a plebiscite were unsuccessful, and Chile remained in possession of Tacna and Arica after the expiration of the 10-year period stipulated in the Treaty of Ancón. In a treaty signed at Lima on June 3, 1929, Article 2 delimited the international boundary dividing the disputed territory of Tacna and Arica between Peru and Chile. A complementary protocol signed on the same day stated in Article I that neither government might without previous agreement with the other cede to any third state all or any part of the territory which, in accordance with the treaty, remained under their respective sovereignties. In Article 2 of the protocol, port facilities granted to Peru under Article 5 of the treaty should consist of free transit to Peruvian territory and from such across Chilean territory. The placing of pillars marking the boundary was completed the following year and a demarcation protocol was signed at Lima on August 5, 1930. In 1939, Chile announced a plan to divert the waters of the Rio Lauca westward through a canal and tunnel into the Quebrada Azapa for purposes of irrigation in the Valle de Azapa and hydroelectric-power generation. Within six miles of the international boundary, Lago Cotacotani is the source of the Rio Lauca which flows successively westward, southward, and eastward for about 50 miles in Chilean territory before entering Bolivia where it ultimately reaches Lago Coipasa. Construction on the project was not started until 1948, and water diversion began 14 years later from a dam located about 16 miles southwest of Lago Cotacotani. In 1962 Bolivia threatened to take the matter of water diversion before the Organization of American States (OAS) which organization ultimately requested the Governments of Bolivia and Chile to resort to one of the means of pacific settlement of disputes provided for in the inter-American system. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Treaty of Peace and Friendship (1904)」の詳細全文を読む スポンサード リンク
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