Río Gallegos vs Arica

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Río Gallegos (Spanish pronunciation: [ˈri.o ɣaˈʃeɣos]) is the capital and largest settlement of the Patagonian province of Santa Cruz in Argentina. Located in the department of Güer Aike, it has a population of about 98,000, according to the 2010 census [INDEC], a 24% increase from the 79,000 in the 2001 census [INDEC]. The city bears the name of the Gallegos River, and sits on its estuary 2,636 km (1,638 mi) south from the Argentinian federal capital Buenos Aires.

Established on 19 December 1885 to increase Argentine power over southern Patagonia, Río Gallegos became the capital of the then Territory of Santa Cruz in 1888, retaining its status when the territory became a province in 1957. Néstor Kirchner, later President of Argentina, served as the city's mayor from 1987 to 1991 and is interred in a mausoleum in the city's cemetery.

Source: Wikipedia

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Arica ( ə-REE-kə; Spanish: [aˈɾika]) is a commune and a port city with a population of 222,619 in the Arica Province of northern Chile's Arica y Parinacota Region. It is Chile's northernmost city, being located only 18 km (11 mi) south of the border with Peru. The city is the capital of both the Arica Province and the Arica and Parinacota Region. Arica has a mild, temperate climate with some of the lowest annual rainfall rates anywhere in the world. Arica is located at the bend of South America's western coast known as the Arica Bend or Arica Elbow. At the location of the city are two lush valleys that dissect the Atacama Desert converge: Azapa and Lluta. These valleys provide fruit for export.Arica is an important port for a large inland region of South America. The city serves a free port for Bolivia and manages a substantial part of that country's trade.

In addition it is the end station of the Bolivian oil pipeline beginning in Oruro. The city's strategic position is enhanced by being next to the Pan-American Highway, being connected to both Tacna in Peru and La Paz in Bolivia by railroad and being served by an international airport. Its mild weather has made Arica known as the "city of the eternal spring" in Chile while its beaches are frequented by Bolivians. The city was an important port already during Spanish colonial rule. Chile seized the city from Peru in 1880 during the War of the Pacific, being recognized as Chilean by Peru in 1929. A substantial part of African Chileans live in or trace their origins to Arica.

Source: Wikipedia