4.7 Persians to Muslims
There are three themes in the millennium of Near Eastern history between the formation of the Persian Empire in the sixth century B.C. and the rise of Islam in the seventh century A.D.
One theme is the political dominance throughout the period of peoples coming broadly from the north. Often they originated in Iran, as with the Persian Empire from the sixth to the fourth century B.C., the Parthian empire from the third century B.C. to the third century A.D., and a second Persian Empire from the third to the seventh century A.D. But they might also come from outside the Near East altogether, as with the Greeks from the fourth century B.C. and the Romans from the second century B.C. Of all these northern peoples, it was the Greeks whose cultural impact on the Near East was the greatest at the time.
The second theme is the eventual displacement of the ancient polytheism of the region by a monotheist faith, Christianity. This religion was an offshoot of a monotheist cult developed by a minor, but innovative, Near Eastern people, the Israelites. As long as this phenomenon was confined to the Israelites and their ethnic heirs, the Jews and Samaritans, it was of no great historical importance. What made an idiosyncratic ethnic tradition a major ingredient of world history was its subsequent metamorphosis into two world religions, Christianity and Islam Their combined adherents currently amount to about half the world's population.
The third theme is the demise of the ancient civilization of Mesopotamia. Like that of Egypt, it survived the end of native rule by some centuries. The last datable cuneiform tablet we possess is an astronomical almanac relating to A.D. 74-75. We cannot pinpoint the final extinction of Mesopotamian civilization, but by the third century A.D. it must have been effectively dead. In that century Mani, a Mesopotamian religious reformer, created a grand synthesis of the religious traditions of his world. Christianity and Buddhism were recognized, as was the Zoroastrian tradition of Iran. But the religious beliefs of ancient Mesopotamia found no place in Mani's new religion. It was as if they had never existed.