You spoke of the Medes and Persians, Greece and the division into four, let's look at some history here...
Dan 8:1 In the third year of the reign of king Belshazzar a vision appeared unto me, even unto me Daniel, after that which appeared unto me at the first.
Dan 8:3 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, and the higher came up last.
The two horns are Media and Persia. The Persians were the dominant of the two and came to power later. They are the higher horn.
Dan 8:4 I saw the ram pushing westward, and northward, and southward; so that no beasts might stand before him, neither was there any that could deliver out of his hand; but he did according to his will, and became great.
Dan 8:5 And as I was considering, behold, an he goat came from the west on the face of the whole earth, and touched not the ground: and the goat had a notable horn between his eyes.
The he goat is Greece and the notable horn is Alexander the Great.
Dan 8:6 And he came to the ram that had two horns, which I had seen standing before the river, and ran unto him in the fury of his power.
Dan 8:7 And I saw him come close unto the ram, and he was moved with choler against him, and smote the ram, and brake his two horns: and there was no power in the ram to stand before him, but he cast him down to the ground, and stamped upon him: and there was none that could deliver the ram out of his hand.
331BC Alexander brought an end to the Medo-Persian empire.
Dan 8:8 Therefore the he goat waxed very great: and when he was strong, the great horn was broken; and for it came up four notable ones toward the four winds of heaven.
Alexander died at age 33. The four notable ones that came up were...
1) Greece and Macedonia, ruled by Cassander;
2) Asia Minor, ruled by Lysimachus;
3) Egypt and Palestine, ruled by Ptolemy Soter;
4) Syria, Babylonia and east to India, ruled by Seleucus Nicator.
Dan 8:9 And out of one of them came forth a little horn, which waxed exceeding great, toward the south, and toward the east, and toward the pleasant land.
Antiochus IV Epiphanes.
Dan 8:10 And it waxed great, even to the host of heaven; and it cast down some of the host and of the stars to the ground, and stamped upon them.
Dan 8:11 Yea, he magnified himself even to the prince of the host, and by him the daily sacrifice was taken away, and the place of his sanctuary was cast down.
Dan 8:12 And an host was given him against the daily sacrifice by reason of transgression, and it cast down the truth to the ground; and it practised, and prospered.
Dan 8:13 Then I heard one saint speaking, and another saint said unto that certain saint which spake, How long shall be the vision concerning the daily sacrifice, and the transgression of desolation, to give both the sanctuary and the host to be trodden under foot?
The Temple is made desolate in 167BC by two things, stopping the daily sacrifice and the sacrifice of a pig on the altar along with erecting the statue of Jupiter Olympus.
Dan 8:14 And he said unto me, Unto two thousand and three hundred days; then shall the sanctuary be cleansed.
This was done 1150 days or 2300 evening and mornings later by Judah, the Hammer, Maccabees. The Temple was cleansed and the Temple lights were lit with only enough oil for 1 day, yet it lasted the eight days. This is where the Jews get Hannukah from.
Dan 11 contains a very detailed account of the KoN and the KoS and you can find a very detailed commentary of Dan 11 here...
http://bible.ucg.org/bible-reading-program/materials/dan11x.pdf
Dan 8:1 In the third year of the reign of king Belshazzar a vision appeared unto me, even unto me Daniel, after that which appeared unto me at the first.
Dan 8:3 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, and the higher came up last.
The two horns are Media and Persia. The Persians were the dominant of the two and came to power later. They are the higher horn.
Dan 8:4 I saw the ram pushing westward, and northward, and southward; so that no beasts might stand before him, neither was there any that could deliver out of his hand; but he did according to his will, and became great.
Dan 8:5 And as I was considering, behold, an he goat came from the west on the face of the whole earth, and touched not the ground: and the goat had a notable horn between his eyes.
The he goat is Greece and the notable horn is Alexander the Great.
Dan 8:6 And he came to the ram that had two horns, which I had seen standing before the river, and ran unto him in the fury of his power.
Dan 8:7 And I saw him come close unto the ram, and he was moved with choler against him, and smote the ram, and brake his two horns: and there was no power in the ram to stand before him, but he cast him down to the ground, and stamped upon him: and there was none that could deliver the ram out of his hand.
331BC Alexander brought an end to the Medo-Persian empire.
Dan 8:8 Therefore the he goat waxed very great: and when he was strong, the great horn was broken; and for it came up four notable ones toward the four winds of heaven.
Alexander died at age 33. The four notable ones that came up were...
1) Greece and Macedonia, ruled by Cassander;
2) Asia Minor, ruled by Lysimachus;
3) Egypt and Palestine, ruled by Ptolemy Soter;
4) Syria, Babylonia and east to India, ruled by Seleucus Nicator.
Dan 8:9 And out of one of them came forth a little horn, which waxed exceeding great, toward the south, and toward the east, and toward the pleasant land.
Antiochus IV Epiphanes.
Dan 8:10 And it waxed great, even to the host of heaven; and it cast down some of the host and of the stars to the ground, and stamped upon them.
Dan 8:11 Yea, he magnified himself even to the prince of the host, and by him the daily sacrifice was taken away, and the place of his sanctuary was cast down.
Dan 8:12 And an host was given him against the daily sacrifice by reason of transgression, and it cast down the truth to the ground; and it practised, and prospered.
Dan 8:13 Then I heard one saint speaking, and another saint said unto that certain saint which spake, How long shall be the vision concerning the daily sacrifice, and the transgression of desolation, to give both the sanctuary and the host to be trodden under foot?
The Temple is made desolate in 167BC by two things, stopping the daily sacrifice and the sacrifice of a pig on the altar along with erecting the statue of Jupiter Olympus.
Dan 8:14 And he said unto me, Unto two thousand and three hundred days; then shall the sanctuary be cleansed.
This was done 1150 days or 2300 evening and mornings later by Judah, the Hammer, Maccabees. The Temple was cleansed and the Temple lights were lit with only enough oil for 1 day, yet it lasted the eight days. This is where the Jews get Hannukah from.
Dan 11 contains a very detailed account of the KoN and the KoS and you can find a very detailed commentary of Dan 11 here...
http://bible.ucg.org/bible-reading-program/materials/dan11x.pdf