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
Historiography of Colonial Spanish America disdain. An important example is Mexico's conservative politician and intellectual Lucas Alamán. His five-volume "Historia de Mejico" is the country's first history, covering the colonial era up to and including the struggle for independence. Alamán viewed crown rule during the colonial era as ideal, and political independence that after the brief monarchy of Agustín de Iturbide, the Mexican republic was characterized by liberal demagoguery and factionalism. Writing in the mid-nineteenth century, Mexican liberal Vicente Riva Palacio, grandson of insurgent hero Vicente Guerrero, wrote a five-volume history of the colonial era from a liberal viewpoint, During the era of Porfirio Díaz