While there have been a number of studies that address coalescence from a regional perspective, less is understood about how aggregated communities functioned internally. The key premise explored in this volume is that large-scale, long-term cultural transformations were ultimately enacted in the context of daily practices, interactions, and what might be otherwise considered the mundane aspects of everyday life. How did these processes play out "on the ground" in diverse and historically contingent settings? What are the strategies and mechanisms that people adopt in order to facilitate living in larger social formations? What changes in social relations occur when people come together? This volume employs a broadly cross-cultural approach to interrogating these questions, employing case studies which span four continents and more than 10,000 years of human history.