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(Σερδική/Serdikḗ, modern Sofia).
I. Early history until the Roman Period
Settlement of the Thracian Serdi on the Oescus  between the Scombrus and Haemus mountain ranges, a nodal point of roads (It. Ant. 135,4; Tab. Peut 7,5; Ptol. 3,11,8); modern Sofia. Settled since the 8th/7th centuries…