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.

随着区域年表的定义更加明确，我们能够更好地追踪大规模的人口流动和相关的文化变迁。来自中坎伯兰地区 (MCR) 的 156 个放射性碳测年数据集，以及来自佐治亚州北部和东田纳西州山脊和山谷部分的另外 199 个放射性碳测年数据进行了评估，可以对从密西西比河谷中部到 MCR 的人口流动进行建模，公元 1200 年至 1450 年间，山脊和山谷的后续运动和影响。卡霍基亚的解体特别令人感兴趣，因为 MCR 在地理上位于美国底层和山脊和山谷省之间。这种大规模的时间顺序视角将东南部和中西部这一地区的关键事件置于统一的历史框架中，增加了我们对文化事件发生时间的理解。一个相关的目标是理清可能影响这一大区域的可能的外部事件和影响。这项研究揭示了文化事件和自然事件之间的关系，例如密西西比河谷中部及其他地区报告的干旱序列。