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 Mexico
The fact that there was an existing prehispanic tradition of writing meant that when the Spanish friars taught Mexican Indians to write their own languages, particularly Nahuatl, an alphabetic tradition took hold. It was used in official documents for legal cases and other legal instruments. The formal use of native language documentation lasted until Mexican independence in 1821. Beginning in the late twentieth century, scholars have mined these native language documents for information about colonial-era economics, culture, and language. The New Philology is the current name for this particular branch of colonial-era Mesoamerican ethnohistory.