Larinum, a pre-Roman town in the modern region of Molise, underwent a unique transition from independence to municipal status when it received Roman citizenship in the 80s BCE shortly after the Social War. Its trajectory during this period illuminates complex processes of cultural, social, and political change associated with the Roman conquest throughout the Italian peninsula in the first millennium BCE. This book uses all the available evidence to create a site biography of Larinum from 400 BCE to 100 CE, with a focus on the urban transformation that occurred there during the Roman conquest. This study is distinctive in utilizing many different types of evidence: literary sources (including the pro Cluentio), settlement patterns, inscriptions, monuments and artifacts. It highlights the importance of local isolated variability in studies of Roman conquest, and provides a narrative that supplements larger works on this theme.