User:MJ Fielder-Jellsey/Teotihuacan

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Teotihuacan /teɪˌoʊtiːwəˈkɑːn/ (Spanish: Teotihuacán) ( Spanish pronunciation: [teotiwa'kan] (listen); modern Nahuatl pronunciation (help·info) ) is an ancient Mesoamerican city located in a sub-valley of the Valley of Mexico, which is located in the State of Mexico, 40 kilometers (25 mi) northeast of modern-day Mexico City. Teotihuacan is known today as the site of many of the most architecturally significant Mesoamerican pyramids built in the pre-Columbian Americas. At its zenith, perhaps in the first half of the first millennium (1 AD to 500 AD), Teotihuacan was the largest city in the pre-Columbian Americas, with a population estimated at 125,000 or more, making it at least the sixth-largest city in the world during its epoch.

The city covered eight square miles (21 km2); 80 to 90 percent of the total population of the valley resided in Teotihuacan. Apart from the pyramids, Teotihuacan is also anthropologically significant for its complex, multi-family residential compounds, the Avenue of the Dead, and its vibrant, well-preserved murals. Additionally, Teotihuacan exported fine obsidian tools that are found throughout Mesoamerica. The city is thought to have been established around 100 BC, with major monuments continuously under construction until about 250 AD. The city may have lasted until sometime between the 7th and 8th centuries AD, but its major monuments were sacked and systematically burned around 550 AD. Its collapse might be related to the extreme weather events of 535–536.

Teotihuacan began as a religious center in the Mexican Highlands around the first century AD. It became the largest and most populated center in the pre-Columbian Americas. Teotihuacan was home to multi-floor apartment compounds built to accommodate the large population. The term Teotihuacan (or Teotihuacano) is also used for the whole civilization and cultural complex associated with the site.

Although it is a subject of debate whether Teotihuacan was the center of a state empire, its influence throughout Mesoamerica is well documented; evidence of Teotihuacano presence is present at numerous sites in Veracruz and the Maya region. The later Aztecs saw these magnificent ruins and claimed a common ancestry with the Teotihuacanos, modifying and adopting aspects of their culture. The ethnicity of the inhabitants of Teotihuacan is the subject of debate. Possible candidates are the Nahua, Otomi, or Totonac ethnic groups. Other scholars have suggested that Teotihuacan was multi-ethnic, due to the discovery of cultural aspects connected to the Maya as well as Oto-Pamean people. It is clear that many different cultural groups lived in Teotihuacan during the height of its power, with migrants coming from all over, but especially from Oaxaca and the Gulf Coast. After the collapse of Teotihuacan, central Mexico was dominated by more regional powers, notably Xochicalco and Tula.

The city and the archeological site are located in what is now the San Juan Teotihuacán municipality in the State of México, approximately 40 kilometers (25 mi) northeast of Mexico City. The site covers a total surface area of 83 square kilometers (32 sq mi) and was designated a UNESCO World Heritage Site in 1987. It is the most visited archeological site in Mexico, receiving 4,185,017 visitors in 2017.

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Teotihuacan also had two other neighborhoods that prominently depicted this mutli-ethnic city picture. Both neighborhoods contained not only different architecture from the other parts of Teotihuacan, but also artifacts and burial practices that began the narrative of these places. Archaeologists have also performed oxygen isotope ratio testing and strontium isotope ratio testing to determine, using the bones and the teeth of the skeletons uncovered, whether these skeletons were native to Teotihuacan or were immigrants to the city. The oxygen ratio testing can be used to determine where someone grew up, and the strontium ratio testing can be used to determine where someone was born and where they were living when they died. These tests revealed a lot of information, but specifically enabled clear distinction between the people living in the ethnic neighborhoods and those native to Teotihuacan.

One neighborhood was called Tlailotlacan and was believed to be a neighborhood of migrants predominantly from the Oaxaca region. The excavations there featured prominently artifacts in the Zapotec style of from the Zapotec region, including one tomb with an antechamber. The oxygen isotope ratio testing was particularly helpful when analyzing this neighborhood because it painted a clear picture of initial influx from Oaxaca, followed by routine journeys back to the homeland to maintain the culture and heritage for the following generations. Later oxygen isotope ratio testing also revealed that out of the skeletons tested, four-fifths of them had immigrated to the city or were born in the city, but spent their childhood in their homeland before returning to Teotihuacan. There was evidence of constant interaction between Teotihuacan and the Oaxacan homeland through journeys taken by children and mothers, keeping the culture and the roots to their homeland alive.

The other main neighborhood was called Barrio de los Comerciantes, or the Merchants' Barrio. There is less information about those who lived here (or perhaps more research needs to be done), but this neighborhood also had clear differences from other areas of the city. The architecture was different, featuring round adobe structures, as well as foreign pottery and artifacts identified as belonging to the Gulf Coast region. This neighborhood, similarly to Tlailotclan, saw a huge influx of immigration, determined by the strontium isotope ratio testing of bones and teeth, with people spending a significant part of their lives before death in Teotihuacan.

Obsidian Laboratories
The processing of obsidian was the most developed art and the main source of wealth in Teotihuacan. The laboratories produced tools or objects of obsidian of various types, intended for commercial transactions beyond the geographical boundaries of the city, such as figurines, blades, spikes, knife handles, jewelry or ornaments etc. Obsidian came mainly from the mines of Pachuca (Teotihuacan) and its processing was the most important industry in the city, which had acquired the monopoly in the trade of obsidian in the broader Middle American region. The state also heavily monitored the trade, movement, and creation of obsidian tools, as it was such an important industry in the city that it was limited to the regional workshops where the tools were produced.