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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
