Darius: i.e. Darius (Hystaspis). See Chronological Structure and notes (pp 617, 618), and App-67.
Babylon. See note on Ezra 5:13.
Related Commentaries of Ezra 6:1
Ezra 6:1
1 Then Darius the king made a decree, and search was made in the house of the rolls,a where the treasures were laid up in Babylon.