Chilenization of Tacna, Arica and Tarapacá
The Chilenization of Tacna, Arica, and Tarapacá refers to a process of forced acculturation implemented by Chile in the former Peruvian territories of Tacna, Arica, and Tarapacá following their occupation during the War of the Pacific (1879–1883). The primary objective was to assert Chilean cultural and national identity in these regions, which had previously been part of Peru.
Source: Wikipedia — Chilenization of Tacna, Arica and Tarapacá (CC BY-SA 4.0)