Mexican War of Independence
Although Mexico gained its independence in September 1821, the marking of this historical event did not take hold immediately. The choice of date to celebrate was problematic, because Iturbide, who achieved independence from Spain, was rapidly created Emperor of Mexico. His short-lived reign from 1821–22 ended when he was forced by the military to abdicate. This was a rocky start for the new nation, which made celebrating independence on the anniversary of Iturbide's Army of the Three Guarantees marching into Mexico City in triumph a less than perfect day for those who had opposed him. Celebrations of independence during his reign were marked on September 27. Following his ouster, there were calls to commemorate Mexican independence along the lines that the United States celebrated in grand style its Independence Day on July 4. The creation of a committee of powerful men to mark independence celebrations, the "Junta Patriótica", organized celebrations of both September 16, to commemorate Hidalgo's grito and the start of the independence insurgency, and September 27, to celebrate actual political independence.
Aztecs
Aztec culture and history has been central to the formation of a Mexican national identity after Mexican independence in 1821. In 17th and 18th century Europe, the Aztecs were generally described as barbaric, gruesome and culturally inferior.
Even before Mexico achieved its independence, American-born Spaniards ("criollos") drew on Aztec history to ground their own search for symbols of local pride, separate from that of Spain. Intellectuals utilized Aztec writings, such as those collected by Fernando de Alva Ixtlilxochitl, and writings of Hernando Alvarado Tezozomoc, and Chimalpahin to understand Mexico’s indigenous past in texts by indigenous writers. This search became the basis for what historian D.A. Brading calls "creole patriotism." Seventeenth-century cleric and scientist, Carlos de Sigüenza y Góngora acquired the manuscript collection of Texcocan nobleman Alva Ixtlilxochitl. Creole Jesuit Francisco Javier Clavijero published "La Historia Antigua de México" (1780–81) in his Italian exile following the expulsion of the Jesuits in 1767, in which he traces the history of the Aztecs from their migration to the last Aztec ruler, Cuauhtemoc. He wrote it expressly to defend Mexico’s indigenous past against the slanders of contemporary writers, such as Pauw, Buffon, Raynal, and William Robertson. Archeological excavations in 1790 in the capital's main square uncovered two massive stone sculptures, buried immediately after the fall of Tenochtitlan in the conquest. Unearthed were the famous calendar stone, as well as a statue of Coatlicue. Antonio de León y Gama’s 1792 "Descripción histórico y cronológico de las dos piedras" examines the two stone monoliths. A decade later, German scientist Alexander von Humboldt spent a year in Mexico, during his four-year expedition to Spanish America. One of his early publications from that period was "Views of the Cordilleras and Monuments of the Indigenous Peoples of the Americas". Humboldt was important in disseminating images of the Aztecs to scientists and general readers in the Western world.