What is the name of the ancient people first described by a Roman historian in his treatise that is adjacent to Prussia?
Prussia (region):  The territory and inhabitants were described by Tacitus in Germania in AD 98, where Suebi, Goths and other Germanic people lived on both sides of the Vistula River, adjacent to Aesti (further east). Aesti: The Aesti (also Aestii or Aests) were an ancient people first described by the Roman historian Tacitus in his treatise "Germania" (circa 98 CE).
i don't know