Caste War of Yucatán
After the end of the Mexican–American War, Governor Barbachano appealed to Mexican President José Joaquín de Herrera for help in suppressing a Mayan uprising, the Caste War of Yucatán, and in exchange Yucatán again recognized the central Mexican government's authority. Yucatán was again reunited with Mexico on 17 August 1848.