Pre-Columbian Americas: Quick Reference Notes

Land-bridge exposure (Beringia) during ice ages; migrations dated to $9{,}000$ – $15{,}000$ years ago.
Genetic evidence: Y-chromosome markers linking Asian populations to Native Americans.
After sea-level rise, migrations by boat and along Pacific coastal routes; possible early watercraft reaching South America.
Outcome: multiple waves and routes, leading to vast cultural diversity.

Occurred around $10{,}000$ years ago; domestication of plants and animals.
Consequences: more reliable food, bigger populations, settled villages, then towns and cities.
Foundation for complex societies and centralized governance.

Olmec (c. $1200$ – $400$ BCE): Gulf Coast of Mexico; often called the mother culture; maize domesticated by around $5000$ BCE; colossal basalt heads; early trade and social stratification; built aqueducts.
Maya (beginnings $2000$ BCE; classical era around $250$ –. $900$ CE): Yucatán, Guatemala, Honduras; perfected calendar, writing system, and a concept of zero; major city-states (Copán, Tikal, Chichén Itzá); environmental stress and drought linked to collapse around $900$ CE; codices (folding books) recorded history and astronomy but most were burned by Diego de Landa in $1562$ ; only a few survived.
Teotihuacan (c. $100$ BCE– $550$ CE): near modern Mexico City; > $100{,}000$ inhabitants at peak; colossal pyramids (Sun, Moon); major religious and trade center; strong ties with Maya; evidence of state rituals and possible human sacrifice.
Aztec (early $14th$ – $16th$ centuries): Tenochtitlan on Lake Texcoco; by 1519 > $200{,}000$ inhabitants; advanced urban planning, water system, and chinampas (artificial agriculture on the lake); centralized, multi-ethnic empire; religion highly ritualized with central human sacrifice.

Inca Empire: land of the four quarters; peak in the $15th–16th$ centuries; spans ~ $2{,}500$ miles along the Pacific and into the Andes.
No wheel; extensive road network maintained by state labor; chasquis runners; quipu for record-keeping and administration.
Centralized rule under the Sapa Inca; mita labor tax; vast terrace farming (maize, beans, squash, quinoa, potato).
Three-way harvest split: ~one-third to peasants, one-third to state, one-third stored in storehouses.
Religion: sun god; gold as the sun’s sweat; human sacrifice rare but documented in crises (e.g., Copacoches on mountaintops).
Machu Picchu (constructed ca. $1450$ ); abandoned around the time of the Spanish conquest; renowned for precision stonework; UNESCO site.

Southwest: ancestors of Pueblo peoples (Mogollon, Hoakum, Anasazi); multi-story adobe villages; irrigation and water management; Chaco Canyon as a religious and cultural hub; extensive road networks; descendants include Hopi and Zuni.
Environmental pressures (droughts) influenced migrations and declines before European contact.
Eastern Woodlands: Hopewell culture (first–fourth centuries CE); Cahokia near St. Louis (c. $1100$ CE) as a major political and trading center; city population ~ $10{,}000$ with surrounding hinterlands; over 120 earthen mounds (Monk’s Mound largest).
Coquia (near St. Louis) around $1100$ CE: major regional city; large trade networks; decline by ≈ $1300$ CE.
Trade networks: shells from Gulf Coast, copper from Great Lakes, obsidian from the Rockies; ceremonial mound goods indicate social hierarchy.

Europeans encountered smaller, autonomous communities rather than vast empires; diseases had already reshaped populations.
Land use and ownership: indigenous view vs European view caused major misunderstandings and conflict.
Social structure and gender: chiefs or councils; women often influential in selecting leaders and guiding policy; matrilineal/matrilineal tendencies in several groups.

A century-spanning, hemispheric tapestry of societies with sophisticated governance, trade, agriculture, and religion.
Central fault line: contrasting land concepts — communal, use-based land vs private, property-based land ownership.
Writing and record-keeping varied: Maya (writing), Inca (quipu), Olmec influence; later Spanish destruction of Maya codices limited our access to earlier knowledge.
Environmental change (droughts, diseases) and colonization reshaped or ended many centers; some legacies persist in descendant communities today.