Darius was king of the medes, you will find that written in the book of Daniel. Daniel chapter 9 reads: "in the first year of Darius the son of Ahasurerus, of the seed of the Medes, which was made king over the realm of the Chaldeans" Its important for you to understand who the Medes are
The writing on the wall is found in the book of Daniel and happened in 539 B.C.E., the same night Babylon fell to the Medes and Persians, and King Belshazzar was slain, (Daniel 5:1-28) ending Israel's 70 years of captivity .
The most famous Mede in Scripture is Darius the Mede.
The Bible is primarily a book about the people Israel. Any other peoples or nations that come in contact with the descendants of Abraham are noted. Persians are descendant from Elam, a son of Shem (Genesis 10:22). The Persian Empire is noted specifically in Ezra 4:9. A very famous King of Persia was Cyrus who was referred to as God's anointed in Isaiah 44:28-45. Today, Iran is considered the peoples of the Persian Empire, however, a read of migrations will reveal how some of the Elamites as well as Medes - a closely associated tribe of peoples - have been located in southeastern Europe (Balkan peoples) and parts of western Russia.
In the King James versionthe word - Mesopotamia - appears 7 timesGen 24:10 And the servant took ten camels of the camels of his master, and departed; for all the goods of his master were in his hand: and he arose, and went to Mesopotamia, unto the city of Nahor.Deu 23:4 Because they met you not with bread and with water in the way, when ye came forth out of Egypt; and because they hired against thee Balaam the son of Beor of Pethor of Mesopotamia, to curse thee.Jud 3:8 Therefore the anger of the LORD was hot against Israel, and he sold them into the hand of Chushanrishathaim king of Mesopotamia: and the children of Israel served Chushanrishathaim eight years.Jud 3:10 And the Spirit of the LORD came upon him, and he judged Israel, and went out to war: and the LORD delivered Chushanrishathaim king of Mesopotamia into his hand; and his hand prevailed against Chushanrishathaim.1 Chr 19:6 And when the children of Ammon saw that they had made themselves odious to David, Hanun and the children of Ammon sent a thousand talents of silver to hire them chariots and horsemen out of Mesopotamia, and out of Syriamaachah, and out of Zobah.Act 2:9 Parthians, and Medes, and Elamites, and the dwellers in Mesopotamia, and in Judaea, and Cappadocia, in Pontus, and Asia,Act 7:2 And he said, Men, brethren, and fathers, hearken; The God of glory appeared unto our father Abraham, when he was in Mesopotamia, before he dwelt in Charran,
The House of Achemaenid Persians and its founder Cyrus brought together the Median Empire which was the successor of the Neo Assyrian Empire and the later known as Persian Empire by acts of war.
The Medes and the Persians conquered the Assyrians together.
The Medes were allies of the Persians.
Cyrus the Great allied the Persians and Medes and used the combined power to takeover the Babylonian and Assyrian Empires.
Inhabitants of present-day Iran.
Their rulers, the Medes.
The premise of this question, namely that Assyria was defeated by the Persians and/or Medes is incorrect. The Assyrian Empire was only ever defeated by the Babylonian Empire. These defeats were brought about by internal strife within the Assyrian Kingdom. The Persians were able to conquer Babylon and acquire the previously conquered Assyria.
The two peoples joined together under Cyrus, and so had the power to overcome their neighbours.
Mardonius there chose out first all the Persians called Immortals, save only Hydarnes their general, who said that he would not quit the king's person; and next, the Persian cuirassiers, and the thousand horse, and the Medes and Sacae and Bactrians and Indians, alike their footmen and the rest of the horsemen.
the Medes and Persians
They were defeated by the medes and the Persians in 539.
The Medes.