20 The ram which thou didst see having two horns are the kings of Media and Persia.
Daniel 8:20 Cross References - EJ2000
Daniel 8:3
3 and I lifted up my eyes and saw, and, behold, a ram was standing before the river, which had two horns; and even though they were high, the one was higher than the other, and the higher one came up last.
Daniel 11:1-2
1 ¶ And in the first year of Darius the Mede, I stood to encourage and to strengthen him.
2 And now will I show thee the truth. Behold, there shall yet be three kings in Persia, and the fourth shall obtain far greater riches than they all; and by his strengthening himself with his riches he shall stir up all against the realm of Grecia.