Compléter Mexico's independenceVersion en ligne The objective of this activity is the correct use of vocabulary in the past. par Andrea Jaqueline Moreno Perez 1 Dolores It 1810 ended 1821 ended 16 Grito Costilla recognized Spanish rule independence began Miguel Hidalgo The Independence of Mexico was a political and social process that took place over eleven years . on September , and on September 27 , by liberating Mexico , formerly the Viceroyalty of New Spain , from . The process of Mexican began with the de , a call made by the priest y to his parishioners to rebel against the Viceroyalty of New Spain , and with the signing of the Treaties of Córdoba , a document in the which Mexico was as an independent nation .