Mexican War of Independence the Congress of Chilpancingo, which gave the insurgency its own legal framework. After the defeat of Morelos, the movement survived as a guerrilla war under the leadership of Vicente Guerrero. By 1820, the few rebel groups survived most notably in the Sierra Madre del Sur and Veracruz. The reinstatement of the liberal Constitution of Cadiz in 1820 caused a change of mind among the elite groups who had supported Spanish rule. Monarchist Creoles affected by the constitution decided to support the independence of New Spain; they sought an alliance with the former insurgent resistance. Agustín de Iturbide led the military
Mexican War of Independence in his home to discuss whether it was better to obey or to revolt against a tyrannical government, as he defined the Spanish colonial government in Mexico. Famed military leader Ignacio Allende was among the attendees. In 1810 Hidalgo concluded that a revolt was needed because of injustices against the poor of Mexico. By this time Hidalgo was known for his achievements at the prestigious San Nicolás Obispo school in Valladolid (now Morelia), and later service there as rector. He also became known as a top theologian. When his older brother died in 1803, Hidalgo took over as priest for