Maya Build Astronomical Observatory at Palenque

Mogollons Establish Agricultural Settlements

Building of Chichén Itzá

Toltecs Build Tula

Aztecs Build Tenochtitlán

Mogollons Establish Agricultural Settlements

Bow and Arrow Spread into North America

Cahokia Becomes the First North American City

Hohokam Adapt to the Desert Southwest

Mississippian Mound-Building Culture Flourishes

Plains Village Culture Flourishes

Viking Era

First European-Native American Contact