Mississippian period mound sites mark centers of social and political authority. Regional Mississippian populations were typically organized into chiefdoms--territorial groups with hereditary, elite leadership classes. Across the Southeast, the chiefdom system of political organization arose as a means of managing increased social complexity caused by steady population growth. Question:
Why were chiefdoms created and organized in this manner?
This population growth was sustained by agriculture (corn, beans, and squash) --a revolutionary new means of subsistence that became an economic mainstay during the Mississippian period.

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