Which had two horns; by which is meant the kingdom of the Medes and Persians, as it is in Daniel 8:20, where it is so interpreted. Before he was called a bear, and here a ram, both noting the same thing, though by different expressions. A ram because he is a fighting creature, pushing. The two horns were high, i.e. they were very powerful. One was higher than the other, i.e. the Median, that it came up last; but afterward the Persian was much superior in magnificence and fame, which was verified in Cyrus; who had an incredible heap, even fifty millions of talents. See Curtius and Strabo.
Related Commentaries of Daniel 8:3
Daniel 8:3
3 Then I lifted up mine eyes, and saw, and, behold, there stood before the river a ram which had two horns: and the two horns were high; but one was higher than the other,a and the higher came up last.