Región de Tarapacá
Arica y Parinacota Region was created on October 8, 2007 under Law 20.175, promulgated on March 23, 2007 by President Michelle Bachelet in the city of Arica. 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.