Native American Tribes: Various groups with distinct languages, cultures, and social structures that inhabited different regions of pre-European America.
Mesoamerica: A region in pre-European America including modern-day Mexico and Central America where advanced civilizations such as the Maya and Aztecs flourished.
Cahokia: An ancient Native American city located near present-day St. Louis, Missouri, which was one of the largest urban centers in pre-European America.