20 The ram which thou sawest having the two horns, they are the kings of Media and Persia.
Daniel 8:20 Cross References - JPS_ASV_Byz
Daniel 8:3
3 And I lifted up mine eyes, and saw, and, behold, there stood before the stream a ram which had two horns; and the two horns were high; but one was higher than the other, and the higher came up last.
Daniel 11:1-2
1 And as for me, in the first year of Darius the Mede, I stood up to be a supporter and a stronghold unto him.
2 And now will I declare unto thee the truth. Behold, there shall stand up yet three kings in Persia; and the fourth shall be far richer than they all; and when he is waxed strong through his riches, he shall stir up all against the realm of Greece.