The Persian Empire of Darius I, the first of the new Aryan empires in the seat of the old civilizations, was the greatest empire the world had hitherto seen. It included all Asia Minor and Syria, all the old Assyrian and Babylonian empires, Egypt, the Caucasus and Caspian regions, Media, Persia, and it extended into India as far as the Indus. Such an empire was possible because the horse and rider and the chariot and the made-road had now been brought into the world. Hitherto the ass and ox and the camel for desert use had afforded the swiftest method of transport. Great arterial roads were made by the Persian rulers to hold their new empire, and post horses were always in waiting for the imperial messenger or the traveller with an official permit. Moreover the world was now beginning to use coined money, which greatly facilitated trade and intercourse. But the capital of this vast empire was no longer Babylon. In the long run the priesthood of Bel Marduk gained nothing by their treason. Babylon though still important was now a declining city, and the great cities of the new empire were Persepolis and Susa and Ecbatana. The capital was Susa. Nineveh was already abandoned and sinking into ruins. XXI THE EARLY HISTORY OF THE JEWS And now we can tell of the Hebrews, a Semitic people, not so important in their own time as in their influence upon the later history of the world. They were settled in Judea long before 1000 B.C., and their capital city after that time was Jerusalem. Their story is interwoven with that of the great empires on either side of them, Egypt to the south and the changing empires of Syria, Assyria and Babylon to the north. Their country was an inevitable high road between these latter powers and Egypt. Their importance in the world is due to the fact that they produced a written literature, a world history, a collection of laws, chronicles, psalms, books of wisdom, poetry and fiction and political utterances which became at last what Christians know as the Old Testament, the Hebrew Bible. This literature appears in history in the fourth or fifth century B.C. Probably this literature was first put together in Babylon. We have already told how the Pharaoh, Necho II, invaded the Assyrian Empire while Assyria was fighting for life against Medes, Persians and Chaldeans. Josiah King of Judah opposed him, and was defeated and slain at Megiddo (608 B.C.). Judah became a tributary to Egypt, and when Nebuchadnezzar the Great, the new Chaldean king in Babylon, rolled back Necho into Egypt, he attempted to manage Judah by setting up puppet kings in Jerusalem. The experiment failed, the people massacred his Babylonian officials, and he then determined to break up this little state altogether, which had long been playing off Egypt against the northern empire. Jerusalem was sacked and burnt, and the remnant of the people was carried off captive to Babylon.