ABSTRACT: This dissertation details the late prehistory of northeastern Florida (A.D. 900-1500) by interrelating the political economy of local and extralocal social relations. Specifically, it explores how broad-scale processes, like exchange and migration, unfold over time and impact a particular local history. Around A.D. 900, a demographic shift, sparked in part by the reemergence of ... [Show full abstract] far-flung communication and exchange networks across the Early Mississippian world of eastern North America, resulted in the northward movement of St. Johns people into northeastern Florida. Over the next few centuries, St. Johns II communities, such as Mill Cove Complex and Mt. Royal, were active participants in exchange relations that exported marine shell and other coastal resources and brought in nonlocal objects of stone, metal, and mineral. ABSTRACT: Eschewing a traditional prestige goods interpretation, this study uses available settlement and mortuary data to argue for a communal political economy among St. Johns II societies, but one that availed itself of social inequality. Situated between the St. Johns II fishers of northeastern Florida and the farming chiefdoms of the Mississippian world were Ocmulgee hunter-gatherers of southern-central Georgia. These foraging groups served as key contacts in St. Johns II participation in Mississippian-period exchange. Direct interactions among these groups are evidenced by the presence of Ocmulgee Cordmarked pottery on St. Johns II sites in northeastern Florida and at Mt. Royal. Results of instrumental neutron activation analysis are presented to corroborate this interpretation. Changing historical circumstances altered the extent to which St. Johns II societies participated in long-distance relations. As a result, by A.D. 1250, most St. ABSTRACT: Johns II people appear to have abandoned northeastern Florida and moved upriver (south). A century or so earlier, Ocmulgee groups had begun to leave their homeland and resettle in southeastern Georgia, perhaps merging with other foraging peoples. By ca. A.D. 1250, these groups known to archaeologists today as St. Marys II expanded southward into northeastern Florida, a move roughly concurrent with the retreat of St. Johns II peoples. The descendents of these foraging immigrants became the sixteenth-century fishers and part-time cultivators of maize who encountered French and Spanish interlopers. Text (Electronic thesis) in PDF format. System requirements: World Wide Web browser and PDF reader. Mode of access: World Wide Web. Title from title page of source document. Thesis (Ph.D.)--University of Florida, 2003. Includes vita. Includes bibliographical references.