Final answer:
The Mississippian people were a long-lasting and influential culture that emerged during the Mississippian period. They were known for their large-scale, corn-based agriculture and were able to support a dense population.
Step-by-step explanation:
The Mississippian people were a long-lasting and influential culture that emerged during the Mississippian period (ca. 500-1400 CE). They originated in the Mississippi River Valley and spread out to encompass a large area in North America. The Mississippian culture was based on large-scale, corn-based agriculture, which allowed them to support a dense population and have a surplus of agricultural products.