As 735 Baffling Bible Questions Answered p.193 says, "…Daniel’s correct use of these words simply cannot be explained if the author were an unknown second -century writer unfamiliar with the details of Persian government three hundred years before his time." (The word satrap is counted as a half, because it was actually a Medean word, which later was adopted by the Persians too.
Kama 735 Baffling Bible Questions Answered, uk.193 inavyosema, ". . . Utumiaji sahihi wa Danieli wa maneno haya hauwezi kuelezwa endapo mwandishi alikuwa hafahamiki kwenye karne ya pili na hakufahamu undani wa serikali ya Kiajemi miaka mia tatu kabla ya muda alioishi." (Neno satrap [maliwali] linahesabiwa kuwa nusu, kwa sababu lilikuwa neno la Kimidiani, ambalo baadaye lilichukuliwa na Waajemi pia.