(Please read from the start)
Now let’s continue about Teotihuacan:
“Collapse
Scholars had originally thought that invaders attacked the city in the 7th or 8th century, sacking and burning it. More recent evidence, however, seems to indicate that the burning was limited to the structures and dwellings associated primarily with the ruling class.[34] Some think this suggests that the burning was from an internal uprising. They say the invasion theory is flawed, because early archaeological work on the city was focused exclusively on the palaces and temples, places used by the upper classes. Because all of these sites showed burning, archaeologists concluded that the whole city was burned. Instead, it is now known that the destruction was centered on major civic structures along the Avenue of the Dead. The sculptures inside palatial structures, such as Xalla, were shattered.[35] No traces of foreign invasion are visible at the site.
Evidence for population decline beginning around the 6th century lends some support to the internal unrest hypothesis. The decline of Teotihuacan has been correlated to lengthy droughts related to the climate changes of 535–536. This theory of ecological decline is supported by archaeological remains that show a rise in the percentage of juvenile skeletons with evidence of malnutrition during the 6th century, which is why there is different evidence that helps indicate that famine is most likely one of the more possible reasons for the decline of Teotihuacan. The majority of their food came from agriculture: They grew things such as maize, beans, amaranth, green tomatoes (tomatillos?), and pumpkins, but their harvest was not nearly sufficient to feed a population as big as it is believed have lived in Teotihuacan.[36] This finding does not conflict with either of the above theories, since both increased warfare and internal unrest can also be effects of a general period of drought and famine.[37] Other nearby centers, such as Cholula, Xochicalco, and Cacaxtla, competed to fill the power void left by Teotihuacan's decline. They may have aligned themselves against Teotihuacan to reduce its influence and power. The art and architecture at these sites emulate Teotihuacan forms, but also demonstrate an eclectic mix of motifs and iconography from other parts of Mesoamerica, particularly the Maya region.
The sudden destruction of Teotihuacan was common for Mesoamerican city-states of the Classic and Epi-Classic period. Many Maya states suffered similar fates in the coming centuries, a series of events often referred to as the Classic Maya collapse. Nearby, in the Morelos valley, Xochicalco was sacked and burned in 900 and Tula met a similar fate around 1150.
There is a theory[39] that the collapse of Teotihuacan was caused by the devastation of its agriculture by the 535 CE eruption of the Ilopango volcano in El Salvador.”
“Culture
Archaeological evidence suggests that Teotihuacan was a multi-ethnic city, and while the official languages used by Teotihuacan is unknown, Totonac and Nahua, early forms of which were spoken by the Aztecs, seem to be highly plausible.[40] This apparent regionally diverse population of Teotihuacan can be traced back to a natural disaster that occurred prior to its population boom. At one point in time, Teotihuacan was rivaled by another basin power, Cuicuilco.[40] Both cities, roughly the same size and hubs for trade, both were productive centers of artisans and commerce.[40] Roughly around 100 BC however, the power dynamic changed when Mount Xitle, an active volcano, erupted, and heavily impacted Cuicuilco and the farmland that supported it. It is believed that the later exponential growth of Teotihuacan's population was due to the subsequent migration of those displaced by the eruption.[40] While this eruption is referenced as being the primary cause for the mass exodus, recent advancements of dating have shed light on an even earlier eruption.[41] The eruption of Popocatepetl in the middle of the first century preceded that of Xitle, and is believed to have begun the aforementioned degradation of agricultural lands, and structural damage to the city; Xitle's eruption further instigated the abandonment of Cuicuilco.
By the Tzacualli phase (ca 1–150 CE) , Teotihuacan saw a population growth of around 60 to 80 thousand people, most of which are believed to have come from the Mexican basin.[42] Following this growth however the influx of new residence slowed, and evidence suggests that, by the Miccaotli phase, ca 200 CE. , The urban population had reached its maximum.”
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