Final answer:
The vast pre-contact indigenous trade network that stretched from the Great Lakes to Florida is known as the Mississippian culture, which emerged in the Mississippi River Valley and involved the exchange of luxury items and materials.
Step-by-step explanation:
The vast pre-contact indigenous trade network that stretched from the Great Lakes to Florida and involved the exchange of luxury items and materials is known as the Mississippian culture. This culture emerged in the Mississippi River Valley and spread out to encompass parts of the Great Lakes, the Carolinas, and northern Florida. They were agriculturalists who practiced large-scale corn-based agriculture, which allowed them to support a dense population and engage in extensive trade.