Aztec Triple Alliance in the context of "Aztecs"

The Spanish conquest of the Aztec Empire was a pivotal event in the history of the Americas, marked by the collision of the Aztec Triple Alliance and the Spanish Empire, with the latter being supported by its Indigenous allies. Taking place between 1519 and 1521, this event saw the Spanish conquistador Hernán Cortés, and his small army of European soldiers and numerous Indigenous allies, overthrowing one of the most powerful empires in Mesoamerica.

Led by the Aztec ruler Moctezuma II, the Aztec Empire had established dominance over central Mexico through military conquest and intricate alliances. Because the Aztec Empire ruled via hegemonic control by maintaining local leadership and relying on the psychological perception of Aztec power—backed by military force—the Aztecs normally kept subordinate rulers compliant. This was an inherently unstable system of governance, as this situation could change with any alteration in the status quo. A combination of factors including superior weaponry, strategic alliances with oppressed or otherwise dissatisfied or opportunistic Indigenous populations, and the impact of European diseases contributed to the downfall of the short rule of the Aztec civilization. In 1520, the first wave of smallpox killed 5–8 million people.

Tetzcoco (Classical Nahuatl: Tetzco(h)co pronounced [tetsˈkoʔko], Otomi: Antamäwädehe) was a major Acolhua altepetl (city-state) in the central Mexican plateau region of Mesoamerica during the Late Postclassic period of pre-Columbian Mesoamerican chronology. It was situated on the eastern bank of Lake Texcoco in the Valley of Mexico, to the northeast of the Aztec capital, Tenochtitlan. The site of pre-Columbian Tetzcoco is now subsumed by the modern Mexican municipio of Texcoco and its major settlement, the city formally known as Texcoco de Mora. It also lies within the greater metropolitan area of Mexico City.

Pre-Columbian Tetzcoco is most noted for its membership in the Aztec Triple Alliance. At the time of the Spanish conquest of the Aztec Empire, it was one of the largest and most prestigious cities in central Mexico, second only to the Aztec capital, Tenochtitlan. A survey of Mesoamerican cities estimated that pre-conquest Tetzcoco had a population of 24,000+ and occupied an area of 450 hectares.

Amate (Spanish: amate [aˈmate] from Nahuatl languages: āmatl [ˈaːmat͡ɬ]) is a type of bark paper that has been manufactured in Mexico since the precontact times. It was used primarily to create codices.

Amate paper was extensively produced and used for both communication, records, and ritual during the Triple Alliance; however, after the Spanish conquest, its production was mostly banned and replaced by European paper. Amate paper production never completely died, nor did the rituals associated with it. It remained strongest in the rugged, remote mountainous areas of northern Puebla and northern Veracruz states. Spiritual leaders in the small village of San Pablito, Puebla were described as producing paper with "magical" properties. Foreign academics began studying this ritual use of amate in the mid-20th century, and the Otomi people of the area began producing the paper commercially. Otomi craftspeople began selling it in cities such as Mexico City, where the paper was revived by Nahua painters in Guerrero to create "new" indigenous craft, which was then promoted by the Mexican government.

Aztec warfare concerns the aspects associated with the military conventions, forces, weaponry and strategic expansions conducted by the Late Postclassic Aztec civilizations of Mesoamerica, including particularly the military history of the Aztec Triple Alliance involving the city-states of Tenochtitlan, Texcoco, Tlacopan and other allied polities of the central Mexican region. This united the Mexica, Apulteca, and Chichimeca people through marriages.

The Aztec armed forces were typically made up of a large number of commoners (yāōquīzqueh [jaː.oːˈkiːskeʔ], "those who have gone to war") who possessed extensive military training, and a smaller but still considerable number of highly professional warriors belonging to the nobility (pīpiltin [piːˈpiɬtin]) and who were organized into warrior societies and ranked according to their achievements. The Aztec state's primary purpose was political expansion and dominance of and exaction of tribute from other city-states, a purpose that relied on constant warfare. Aztec society was also centered on warfare: every Aztec male received basic military training from an early age and one of the few possible opportunities of upward social mobility for commoners (mācehualtin [maːseˈwaɬtin]) was through military achievement, especially the taking of captives (māltin [ˈmaːɬtin], singular malli). Thus only specifically chosen men served in the military. The sacrifice of war captives was an important part of many of the Aztec religious festivals. Warfare was thus the main driving force of both Aztec economy and religion.

Tacuba is a section of northwest Mexico City. It sits on the site of ancient Tlacopan. Tacuba was an autonomous municipality until 1928, when it was incorporated into the Central Department along with the municipalities of Mexico, Tacubaya and Mixcoac. The Central Department was later divided into boroughs (delegaciones); historical Tacuba is now in the borough of Miguel Hidalgo. The area was designated as a "Barrio Mágico" by the city in 2011.

Tacuba was called Tlacopan in the pre-Hispanic period. Tacuba is derived from the former Nahuatl name "Tlacopan" and means place of the jarilla plant. It was conquered by Azcapotzalco which placed Totoquihuatzin as governor. When the Tenochtitlan and Texcoco decided to ally against Azcapotzalco, Tlacopan did not resist and for this reason is considered to be the third of the Aztec Triple Alliance. Tacuba's importance led to the construction of a causeway over the lake linking it with Tenochtitlan. Today, this causeway still exists as a major thoroughfare called Calzada Mexico-Tacuba.