Here I present you a detailed expansion of the history of Teotihuacán:
*Preclassic Period (100 BC - 100 A.D.) *
1. *Foundation*: Teotihuacán emerges as a ceremonial center, possibly founded by the Teotihuacans or the Otomíes.
2. *Influence of Cuicuilco*: The culture of Cuicuilco influenced the architecture and religion of Teotihuacan.
3. *Initial development*: Construction of the Pyramid of the Sun (100 BC) and the Calzada de los Muertos.
4. *Demographic growth*: Population grows to 50,000 inhabitants.
*Classic Period (100 - 600 A.D.) *
1. *Apogee*: Teotihuacán becomes an expansive empire, dominating Mesoamerica.
2. *Conquests*: Dominance over cities such as Tikal, Palenque and Monte Albán.
3. *Trade*: Exchange with Mesoamerican cities, such as obsidian and cocoa.
4. *Architectural development*: Construction of the Pyramid of the Moon, temples and palaces.
5. *Population*: It reaches 200,000 inhabitants.
*Late Classic Period (600 - 750 A.D.) *
1. *Decline*: Teotihuacán begins to decline due to internal and external factors.
2. *Invasions*: Incursions of external groups, such as the Toltecs.
3. *Political crisis*: Weakening of central power and struggles for control.
4. *Economic decline*: Decline of trade and agriculture.
*Postclassic Period (750 - 900 AD) *
1. *Abandono*: Teotihuacán is abandoned, possibly due to overpopulation and economic decline.
2. *Migrations*: Peoples such as the Toltecs and Aztecs occupy the valley.
3. *Reuse*: Temples and structures are reused for rituals and ceremonies.
*Spanish Conquest (1519 - 1600 A.D.) *
1. *Arrival of the Spaniards*: Hernán Cortés arrives in Teotihuacán in 1519.
2. *Sacking and destruction*: Spaniards loot and destroy temples and structures.
3. *Colonization*: Establishment of the city of Teotihuacan.
*Colonial Era (1600 - 1821 A.D.) *
1. *Restoration*: Reconstruction of churches and buildings.
2. *Explorations*: First descriptions of the archaeological zone by conquerors and missionaries.
3. *Protection*: Measures to preserve the site.
*Independent Era (1821 - present)*
1. *Excavations*: Systematic archaeological investigations.
2. *Restoration*: Protection and conservation of the site.
3. *Tourism*: Development of cultural tourism.
4. *Declaration as World Heritage Site*: UNESCO (1985).
5. *Current research*: Excavations and studies on the city continue.
*Bibliography*
1. "Teotihuacán: Official Guide" (Secretary of Culture of Mexico).
2. "La Civilización Teotihuacana" (René Millon).
3. "Teotihuacán" (UNESCO).
4. "Archaeology of Teotihuacan" (Encyclopedia Britannica).
*Sources*
1. National Institute of Anthropology and History (INAH).
2. UNESCO.
3. Government of the State of Mexico.
4. Official website of Teotihuacan.
