Where did the Celtiberians live?
Celtiberians
From the 3rd century, the clan was superseded as the basic Celtiberian political unit by the oppidum, a fortified organized city with a defined territory that included the castros as subsidiary settlements. These civitates as the Roman historians called them, could make and break alliances, as surviving inscribed hospitality pacts attest, and minted coinage. The old clan structures lasted in the formation of the Celtiberian armies, organized along clan-structure lines, with consequent losses of strategic and tactical control.