As regional chronologies become better defined, we are better able to track large-scale population movements and related cultural change. A dataset of 156 radiocarbon dates from the Middle Cumberland Region (MCR), evaluated with 199 more dates from the Ridge and Valley portions of northern Georgia and East Tennessee, enable modeling of population movements from the Central Mississippi Valley into the MCR, as well as subsequent movements and effects in the Ridge and Valley between AD 1200 and 1450. The dissolution of Cahokia is of particular interest, because the MCR falls geographically between the American Bottom and the Ridge and Valley province. This large-scale chronological perspective places key events in this part of the Southeast and Midwest into a unified historical framework that increases our understanding of the timing of cultural events. A related goal is to sort out possible external events and influences that may have affected this large region. This study makes apparent the relationships between cultural events and natural events, such as the drought sequences reported for the Central Mississippi Valley and beyond.

This article investigates the rise of social complexity of Cahokia's multiethnic city through a robust stylistic grammar analysis of early Caddo fine ware vessels at Cahokia's East St. Louis Precinct. We explore ceramic production and distribution to shed light on whether Caddo-like fine wares were produced by Caddo potters who lived and crafted at Cahokia, were produced by local Cahokia potters who copied Caddo motifs, or were imported to Cahokia from the southern Caddo area. This investigation helps us better understand the nature of Caddo connections at the beginning of Cahokia's development and provides a means of identifying and interpreting new levels of social interactions between the Caddo world and Cahokia. The stylistic grammar results show that the majority of the Caddo-like vessels at Cahokia have identical stylistic grammar as vessels from the Caddo world. This strongly suggests that Caddo craft specialists migrated to, lived, and crafted their homeland vessels at Cahokia and thus were key social actors in its development.

Plants and animals play a vital role in the human experience, from providing basic sustenance to creating unique social practices that may govern familial, political, or religious experiences; reconstitute identities; or forge social relationships. In this article, we present analyses on the ethnobotanical and zoological remains recently recovered from the Spring Lake Tract, Cahokia, a neighborhood populated from approximately AD 900 to 1275. The assemblage represents a variety of plants and animals that demonstrate the diverse utility of the biota from the region. We conclude that this assemblage indicates that this neighborhood community participated in an array of practices not easily dichotomized into “ritual” or “domestic.” From the perspectives of “Place-Thought” and locality, we emphasize the agency of these entities (plant/animal/human) in the process of creating and sustaining this Cahokian neighborhood.

White and colleagues (2020) have argued that after Cahokia's AD 1400 decline, the native population in the Horseshoe Lake Watershed rebounded beginning in AD 1500 and peaked around 1650, and that the native groups populating the area were members of the Illinois Confederation. These arguments are based on a population reconstruction obtained from fecal stanol concentrations from Horseshoe Lake sediment cores and regional historical, archaeological, and environmental data. We argue that their interpretations are problematic because they discount extensive regional archaeological and historical datasets and do not consider alternative hypotheses that could explain high levels of fecal stanol concentrations in lake sediments.

Skousen and Aiuvalasit critique our article on the post-Mississippian occupation of the Horseshoe Lake watershed (White et al. 2020) along two lines: (1) that our findings are not supported due to a lack of archaeological evidence, and (2) that we do not consider alternative hypotheses in explaining the lake's fecal stanol record. We first respond to the matter of fecal stanol deposition in Horseshoe Lake and then address the larger issue, the primacy of archaeological data in interpreting the past.

The history of maize (Zea mays L.) in the eastern Woodlands remains an important study topic. As currently understood, these histories appear to vary regionally and include scenarios positing an early introduction and an increase in use over hundreds of, if not a thousand, years. In this article, we address the history of maize in the American Bottom region of Illinois and its importance in the development of regional Mississippian societies, specifically in the Cahokian polity located in the central Mississippi River valley. We present new lines of evidence that confirm subsistence-level maize use at Cahokia was introduced rather abruptly at about AD 900 and increased rapidly over the following centuries. Directly dated archaeobotanical maize remains, human and dog skeletal carbon isotope values, and a revised interpretation of the archaeological record support this interpretation. Our results suggest that population increases and the nucleation associated with Cahokia were facilitated by the newly introduced practices of maize cultivation and consumption. Maize should be recognized as having had a key role in providing subsistence security that—combined with social, political, and religious changes—fueled the emergence of Cahokia in AD 1050.

The occupation history of the Cahokia archaeological complex (ca. AD 1050–1400) has received significant academic attention for decades, but the subsequent repopulation of the region by indigenous peoples is poorly understood. This study presents demographic trends from a fecal stanol population reconstruction of Horseshoe Lake, Illinois, along with information from archaeological, historical, and environmental sources to provide an interpretation of post-Mississippian population change in the Cahokia region. Fecal stanol data indicate that the Cahokia region reached a population minimum by approximately AD 1400, regional population had rebounded by AD 1500, a population maximum was reached by AD 1650, and population declined again by AD 1700. The indigenous repopulation of the area coincides with environmental changes conducive to maize-based agriculture and bison-hunting subsistence practices of the Illinois Confederation. The subsequent regional depopulation corresponds to a complicated period of warfare, epidemic disease, Christianization, population movement, and environmental change in the eighteenth century. The recognition of a post-Mississippian indigenous population helps shape a narrative of Native American persistence over Native American disappearance.

Much of what is known about the Indigenous city of Cahokia, located in and influential on the North American midcontinent during the eleventh through fourteenth centuries AD, derives from decades of salvage, research, and CRM excavations in the surrounding American Bottom region. We use this robust dataset to explore patterns of building conflagration that suggest these practices of burning were part of pre-Mississippian traditions that were bundled into new Cahokian landscapes during the early consolidation of the city. These bundled practices entangled sources of power that were at once political and religious, thus transforming the practices and meanings associated with terminating building use via fire.

Cahokia is the largest documented urban settlement in the pre-Columbian United States. Archaeological evidence suggests that the city, located near what is now East St. Louis, Illinois, began to rapidly expand starting around AD 1050. At its height, Cahokia extended across 1000 ha and included large plazas, timber palisade walls, and hundreds of monumental earthen mounds. Following several centuries of occupation, the city experienced a period of gradual abandonment from about AD 1200 to 1400. Here, we present geochemical data from a 1500-year-old sediment core from nearby Horseshoe Lake that records watershed impacts associated with the growth and decline of Cahokia. Sedimentary analysis shows a distinctive 24-cm-thick, gray, fine-grained layer formed between AD 1150 and 1220 and characterized by low carbonate δ13C, elevated sorbed metal concentrations, and higher organic matter δ15N. The deposition of this layer is contemporaneous with archaeological evidence of increased agricultural activity, earthen mound construction, and higher populations surrounding the lake. We hypothesize that these human impacts increased soil erosion, producing new sediment sources from deeper soil horizons, and shifted dissolved transport to the lake, producing lower carbonate δ13C values, higher concentrations of lead, copper, potassium, and aluminum, and increased δ15N, likely due to contributions of enriched nitrogen from sewage.

In the mid eleventh century AD, Cahokia emerged as a substantial Mississippian urban centre. To the east, a shrine-complex known as the Emerald Acropolis, marking the beginning of a processional route to the city, also flourished. Excavations and geophysical survey of the monumental landscape around this site suggest that lunar cycles were important in the orientation of structures and settlement layout. They further indicate that water played a significant role in the ritual activities associated with the closure and abandonment of individual structures. The contemporary development of these sites suggests an intrinsic connection between them, and provides early evidence of the importance that the moon and water came to assume in Mississippian culture.

What type of implement was used to cut and move earth in prehistory? In the Mississippian culture at least, the key tool was the stone hoe – formed from a chert blade strapped to a handle. These blades were hoarded and depicted in use, leaving little doubt that they were for digging, in the service of agriculture and extracting earth for building. Drawing on a series of controlled experiments, the authors deduce the capabilities and biographies of the stone hoes, evoking the admirable efforts of the people who constructed the massive mounds of Cahokia.

Is ecology or agency the principal imperative of the formation of complex societies? Using new survey data, the author shows how both interest in the development of the riverside settlement area of the American Bottom and how the different modern histories of the northern (industrial) and the southern (agricultural) American Bottom, have affected the survival of evidence and how this in turn has favoured a different emphasis in interpretation for each.

The recent discovery of a cache of 70 groundstone axe-heads at the Grossmann site, near Cahokia, in the Mississippi valley prompts a new interpretation of the commemorative and ritual value of such deposits. The makers of these axe-heads seem to belong to a community of specialists who had a contributory role in the foundation of the Cahokia polity.