The Roman world arose from a braided landscape of Italic peoples, coastal Phoenician and Greek settlements, and inland communities across the Italian peninsula. Archaeological layers sampled here span early historic centuries through the height of empire: sites include Rome (Casal Bertone), Pompeii (Campania), coastal Sardinia (Alghero; Sant'Imbenia), and Anatolian centres such as Boğazköy-Ḫattuša, Iznik and Gölyazı. Material culture — ceramics, inscriptions and urban plans — shows how city foundations and colonization tied diverse peoples into shared economic and administrative networks.
Genetic data covering 252 individuals provide a long temporal arc (802 BCE to 1400 CE). These samples capture population continuities in central Italy alongside recurrent gene flow from the eastern Mediterranean and northern provinces. Archaeological evidence indicates the movement of peoples through soldier deployments, merchant communities, and freedmen who settled in port cities and urban neighborhoods. For example, cemeteries at Empúries (Spain) and the necropoleis at Gölyazı (Apollonia, Marmara) show material links to broader trade networks that genetic signatures can help illuminate.
Limited evidence remains for some provinces and later medieval layers; while the sample set is substantial, spatial and chronological biases persist. Archaeology frames plausible movement and contact routes; genetics quantifies them, revealing a patchwork of local continuity and episodic admixture across the empire.
