Chile–Mexico relations with representatives of the United States and Mexico in Niagara Falls, Canada to ease the tension between the two nations and to avoid war, which afterwards did not occur. On 11 November 1974, then-Mexican President Luis Echeverría Álvarez severed diplomatic relations with Chile a year after the unconstitutional removal and death of elected President Salvador Allende by General Augusto Pinochet. For the next fifteen years, Mexico would receive thousands of Chilean refugees who were fleeing the dictatorship of Pinochet. Both nations re-established diplomatic relations on 23 March 1990. Since the re-establishment of diplomatic relations, both nations have increasingly become closer
Regions of Chile in 2007, the north-south Roman numeral order was broken. In February 2018, the Strengthening of Regionalization Law (Law 21074) was enacted . Among other things, it removed the roman numerals from the designations. The administrative divisions of Chile were created in 1974 and limited to 13 regions (this limitation was eliminated in 2005 via a constitutional reform). Previously, Chile was divided into 25 provinces, which were further divided into departments, and then into communes. The new territorial organization was implemented in phases with some initial "pilot regions" beginning to operate in 1974, extending the process on January 1, 1976 to