The law divided the former Tarapacá Region into two: the northern portion became the XV Arica y Parinacota Region, and the southern portion remained the I Tarapacá Region.
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Greater Iquique is a Chilean conurbation that includes Iquique and Alto Hospicio communes in the Iquique Province in Tarapacá Region.
It was first described in 1844 for an occurrence in Cerros Pintados, Pampa del Tamarugal, Iquique Province, Tarapacá Region, Chile.