The goat & ram of Daniel 8 are symbolic of something deeper than just Persia & Greece (although they represent that too).
Daniel 8 is also about the Sanctuary. These animals were used in the Sanctuary service....
And he said unto me,
Daniel 8 is also about the Sanctuary. These animals were used in the Sanctuary service....
Unto two thousand and three hundred days;
then shall the sanctuary be cleansed.
Daniel 8:14