Spanish attempts to reconquer Mexico
Mexican independence was officially achieved on September 27, 1821, under the Treaty of Córdoba. Spain did not recognize the treaties, arguing that the viceroy Juan O'Donojú had no authority to recognize the independence of any overseas province. This situation was dangerous to the newly acquired independent status of the nation, which had not yet been recognized by any of the European powers that could support it, and the threat of Spanish reconquest was a constant worry to the leaders of the nascent regime. On May 13, 1822 decrees were issued by the government to imprison anyone who conspired against Mexico's independence.
José María Morelos
José María Teclo Morelos Pérez y Pavón () (September 30, 1765, City of Valladolid, now Morelia, Michoacán – December 22, 1815, San Cristóbal Ecatepec, State of México) was a Mexican Roman Catholic priest and revolutionary rebel leader who led the Mexican War of Independence movement, assuming its leadership after the execution of Miguel Hidalgo y Costilla in 1811. Morelos and Ignacio López Rayón are credited with organizing the war of independence. Under Morelos the Congress of Anáhuac was installed on September 13, 1813 and in November 6 of the same year congress declared the country's independence. On October 22, 1814 a constitution, "Decreto Constitucional para la Libertad de la América Mexicana", was drafted by the Congress which declared that Mexico would be a Republic.