History of North America was declared in 1810 by Miguel Hidalgo, starting the "Mexican War of Independence". In 1813, José María Morelos and the Congress of Anáhuac signed the Solemn Act of the Declaration of Independence of Northern America, the first legal document where the separation of the New Spain with respect to Spain is proclaimed. Spain finally recognized Mexico's independence in 1821. From the time of independence of the United States, that country expanded rapidly to the west, acquiring the massive Louisiana territory in 1803. Between 1810 and 1811 a Native confederacy under Tecumseh fought unsuccessfully to keep the Americans from pushing them
Spanish conquest of the Aztec Empire "The Aztecs Under Spanish Rule: A History of the Indians of the Valley of Mexico, 1519–1810" (1964) were central in reshaping the historiography of the indigenous and their communities from the Spanish Conquest to the 1810 Mexican independence era. Scholars who were part of a branch of Mesoamerican ethnohistory, more recently called the New Philology have, using indigenous texts in the indigenous languages, been able to examine in considerable detail how the indigenous lived during the era of Spanish colonial rule. A major work that utilizes colonial-era indigenous texts as its main source is James Lockhart's "The Nahuas After the