Mexican War of Independence
The Mexican War of Independence () was an armed conflict, and the culmination of a political and social process which ended the rule of Spain in 1821 in the territory of New Spain. The war had its antecedent in Napoleon's French invasion of Spain in 1808; it extended from the Cry of Dolores by Father Miguel Hidalgo y Costilla on September 16, 1810, to the entrance of the Army of the Three Guarantees led by Agustín de Iturbide to Mexico City on September 27, 1821. September 16 is celebrated as Mexican Independence Day.
Military history of Mexico
Yucatán had considered itself an independent nation, but during the crisis of the revolt had offered sovereignty to any nation that would aid in defeating the Indians. The Mexican government was in a rare position of being cash rich from payment by the United States under the Treaty of Guadalupe Hidalgo for the territory taken in the Mexican–American War, and accepted Yucatán's offer. Yucatán was officially reunited with Mexico on 17 August 1848. European Yucateco forces rallied, aided by fresh guns, money, and troops from Mexico, and pushed back the Maya from more than half of the state.