Mexican War of Independence
Iturbide's assignment to the Oaxaca expedition coincided with a successful military coup in Spain against the monarchy of Ferdinand VII. The coup leaders, part of an expeditionary force assembled to suppress the independence movements in the Americas, had turned against the monarchy. They compelled the reluctant Ferdinand to reinstate the liberal Spanish Constitution of 1812 that created a constitutional monarchy. When news of the liberal charter reached Mexico, Iturbide perceived it both as a threat to the status quo and a catalyst to rouse the criollos to gain control of Mexico. Independence was achieved when conservative Royalist forces in the colonies chose to rise up against the liberal regime in Spain; it was an about-face compared to their previous opposition to the peasant insurgency. After an initial clash with Guerrero's forces, Iturbide assumed command of the royal army. At Iguala, he allied his formerly royalist force with Guerrero’s radical insurgents to discuss the renewed struggle for independence.
History of New Mexico
The decade that led up to independence was a painful period in the history of Mexico. In 1810 catholic priest Miguel Hidalgo instigated a war for independence in central Mexico, a struggle that quickly took on the character of a class war. The following year, military captain Las Casas instigated a coup within the Imperial regime. Sympathizing with the poor underclass, Las Casas opened up a line of dialogue with the revolutionaries. This caused the Spanish elite to instigate its own counter coup and executed Las Casas. For years afterward the regime failed to regain coherency and the mandate to administrate. These ideological struggles affected peripheral New Mexico much less than they did the national center, but it resulted in a sense of alienation with central authority.