The Real identity of Darius the Mede in the " Book of Daniel"

Precisely “Darius the Mede” in “Book of Daniel”, who rules over Babylon, is not clear in any primary historical sources. Neither the Babylonian nor the Persian history has recorded such a person. This project is due to gain his clear picture. As “Darius the Mede” is unknown to any other source, many historians view his presence in Daniel as simply a mistake by the author. The author perhaps inadvertently placed the Persian King Darius I at an earlier date than the King actually reigned. However, it is suggested here that “Darius” was a second name for “Cyrus” who was called “Medes” in some primary sources. Moreover in “Daniel”, Angel Gabriel informs the prophet that there will be four Persian kings before the coming of “Alexander the Great”. It is argue here that a much later writer of a manuscript of “Daniel” may have been misled by some facts in the Old Testament. Finally, it will be suggested that some of the facts which had come from the Old Testament should be re-examined.