Rise of Aztec Civilization — Key Timelines & Foundations

Timetables

  • Maize and other crops domesticated 5000 ext{--}7000\text{ BC}; agriculture becomes main subsistence by 2000\text{ BC}.
  • Formative/Preclassic: small villages, Olmec influence (e.g., Chalcatzingo).
  • Around 100\text{ BC}, Cuicuilco and Teotihuacan become states; Mount Xitle eruption bury Cuicuilco; Teotihuacan grows into the largest urban center in Mesoamerica.
  • Classic period in central Mexico: AD\ 150--\ 700; Teotihuacan’s heyday; population ~150{,}000; grid plan and central avenues; Street of the Dead; pyramids of the Sun and Moon.
  • Epiclassic period: AD\ 700--\ 900; fortress-cities rise and decline (Xochicalco, Cacaxtla, Teotenango).
  • Early Postclassic: AD\ 900--\ 1100; Tula rises as a major center; Toltecs as important ancestral symbol in Aztec memory; Tollan as a symbolic/metaphysical capital.
  • Late Postclassic: AD\ 1300--\ 1520; growth of Tenochtitlan and the Triple Alliance empire; subdivisions sometimes used: Late Aztec A (1350–1430) and Late Aztec B (1430–1520).
  • Native historical timetable begins with Toltecs; Teotihuacan and Toltec influence shape Aztec identity; by 1430s–1519, native sources provide a detailed chronology.

Pre-Aztec Civilizations

  • Teotihuacan: Classic period (AD 150--\700); peak city ~150{,}000 people; 21 km²; Street of the Dead; Pyramid of the Sun and Moon; vast economic and religious influence; burned/abandoned around the 7^{th} century.
  • Teotihuacan influence: sacred center; engaged in regional trade; borrowed and influenced iconography and urban planning (grid, monumental architecture).
  • Toltecs (Tula): Early Postclassic center; Toltecs viewed as wise rulers by later Aztecs, but archaeology shows no large Toltec empire; city ~50{,}000; two pyramids and ballcourts; fall around the mid-12^{th} century.
  • Toltec legacy: Aztec rulers traced lineage to Toltecs; Tollan as symbolic source of legitimacy; Mapa Quinatzin depicts dual Toltec/Chichimec ancestry.

Aztlan Migrations and Nahuatl

  • Aztlan: original homeland; meaning "place of the herons"; origin of the name Aztec.
  • Chicomoztoc: "place of seven caves"; multiple migrant groups (estimates up to 17 groups).
  • Migration timeline (three main contingents):
    • Valley of Mexico groups by AD 1200.
    • Surrounding valleys by AD 1220.
    • Mexica by AD 1250; Chapultepec settled first due to land scarcity.
  • Nahuatl language: part of the Uto-Aztecan family; originated in northern Mexico/southern US; spread south with Aztec expansion; by 1519 Nahuatl widespread in diplomacy and trade.

The Growth of City-States: Early Aztec Period (1100–1300)

  • Aztlan migrants founded new towns; many non-Nahuatl-speaking peoples assimilated;
    some groups (e.g., Otomi) retained distinct identities.
  • Rulers (tlatoque) established genealogical links to Toltecs; inter-dynastic alliances and warfare common.
  • Key polities in the Valley of Mexico and surroundings: Azcapotzalco, Coatlinchan, Culhuacan, Tenayuca, Xaltocan; Cuauhnahuac/Teopanzolco, Calixtlahuaca, Cholula, Huexotzinco.
  • Common Aztec culture forms: Nahuatl language; shared Aztlan origin; religion with a core ritual tradition; twin-temple pyramids become a hallmark of Early Aztec temple architecture.

Teopanzolco and Tenayuca: Early Aztec Cities

  • Teopanzolco (Cuauhnahuac) center; two-tier twin-stair pyramids; connected to Cuernavaca; distinctive painted ceramics.
  • Tenayuca (near modern Mexico City): twin-stair pyramid surrounded by a serpent-wall (coatepantli); site central to Early Aztec religious and political life.
  • Both sites show that Aztec communities across the region shared a common architectural vocabulary and religious symbolism that the Mexica later adopted for Tenochtitlan’s Templo Mayor.

Mexica Outcasts (1250–1325)

  • Mexica settled initially in Chapultepec and then Tizaapan under Culhuacan protection.
  • Allied with Culhuacan against Xochimilca; migration and state-building followed divine mandate from Huitzilopochtli.
  • Found Tenochtitlan in the year AD\ 1325, on a swampy island, guided by a sign of an eagle on a nopal cactus.

Tenochtitlan and Empire: The Late Aztec Period

  • Geography advantages: island location provided resources, defense, and farming via chinampas; dikes and canals managed saltwater intrusion.
  • Early Tepanec and Acolhua competition: Azcapotzalco (Tepanecs) and Texcoco (Acolhua) as powerful neighbors; Mexica allied with Tepanecs under Tezozomoc for a time.
  • Dynastic marriages as diplomacy: Acamapichtli (1372–1391) through Culhua connections; Huitzilihuitl (1391–1415) expanded Tenochtitlan and forged major alliances; Tlatelolco market grows as regional trade hub.
  • Itzcoatl (r. 1425?) strengthens power; Tlacaelel and Motecuhzoma Ilhuicamina (Motecuhzoma I) become key advisers; cihuacoatl office established.
  • Itzcoatl–Tlacaelel–Motecuhzoma alliance helps lay foundations for empire and codified history to glorify Mexica rise.

The Triple Alliance and Imperial Expansion (1428–1519)

  • 1428: Formation of the Triple Alliance by Tenochtitlan, Texcoco, and Tlacopan (Huexotzinco later linked); two-fifths to Tenochtitlan, two-fifths to Texcoco, and one-fifth to Tlacopan for conquests.
  • Valley of Mexico control and chinampas expansion; by 1430, chinampas covered much of the lakebeds and fed the growing empire.
  • Early expansion: Cuauhnahuac and Huaxtepec in Morelos; Morelos campaigns consolidate central Mexican power; Itzcoatl and Nezahualcoyotl coordinate eastern expansion.
  • Itzcoatl burns earlier histories to glorify the Mexica; Motecuhzoma I (1440–1479) consolidates rule, expands administrative reach, and introduces a new tax system; quauhpilli (eagle lord) title created to reward meritorious commoners.
  • Drought of 1450–1454; famine followed by renewed expansion (1458 onward): Morelos, Gulf Coast, Oaxaca; Axayacatl and later Ahuitzotl push deeper into the empire; Tlaxcalla remains a strong rival.
  • Axayacatl (r. 1450s--1479): conquests including Toluca; conflict with Tarascan empire; large-scale battles and consolidation; Tlatelolco market becomes major commercial hub.
  • Ahuitzotl (r. 1486--1502): expands to the Valley of Oaxaca and Xoconochco; frontier fortifications against Tarascan border; temple and tombs associated with Ahuitzotl (possible tomb of Ahuitzotl under Templo Mayor, 1502).
  • Motecuhzoma II (r. 1502--1520): centralizes power, eliminates rival officials, strengthens Mexica hereditary nobility; Tlaxcalla alliance with Cortés proves pivotal in 1519; empire is nearly at its height when Cortés arrives.
  • By 1519 the empire is one of the largest in the Americas; Cortés’s alliance with Tlaxcalla leads to its fall in 1521.

Year-Count Codices and Imperial Chronology

  • Aztec codices used year-counting systems; long continuous year lines connect events to year glyphs (e.g., Tira de Tepechpan).
  • Example: 1501–1510 segment shows events such as the death/acession of rulers and major ceremonies (e.g., 1502 death of Ahuitzotl; 1507 New Fire; 1508 temple construction; 1510 Cuauhtzin’s accession).
  • Year-count codices provide a framework to trace local events against imperial happenings.

Imperial Strategy and Administration

  • Economic strategy: promote trade via pochteca; tax collection centralized by Mexica appointees; control of markets and routes central to wealth.
  • Frontier strategy: establish client states and outposts along borders to contain enemies (Tarascan border, Gulf Coast, Oaxaca).
  • The empire’s administrative architecture centralized power in the hands of Mexica elites, while maintaining provincial autonomy under orderly taxation and tribute.

Quick Reference Dates (essential anchors)

  • Teotihuacan peak: AD\ 450\text{--}600; burned around AD\ 700.
  • Tollan/Tula Toltecs: mid- to late Postclassic; fall mid-12^{th} century.
  • Mexica founded Tenochtitlan: AD\ 1325.
  • Triple Alliance formed: AD\ 1428.
  • Major expansion cycles: Motecuhzoma I and Axayacatl (Cycle 1); Ahuitzotl and Motecuhzoma II (Cycle 2).
  • Aztec Empire falls to Cortés: AD\ 1519--1521.

Key terms to remember

  • Mexica, Aztlan, Chicomoztoc, Tollan (Toltecs), Teotihuacan, Tlatoani, Tlacopan, Texcoco, chinampa, cihuacoatl, quauhpilli, pochteca, calpulli, Mapa Quinatzin, year-count codices.