Babylon was not at that time levelled with the ground, but became one of the capitals of the Persian Empire, where the Persian monarch resided for more than half the year. Although the Babylonian Empire began with Nabopolassar, B.C. 625, on the destruction of Nineveh, yet Babylon was a very ancient city and the capital of the ancient Chaldaean monarchy, which lasted under various dynasties from about 2400 B.C. to 1300 B.C., when it was taken by the Assyrians under Tig Vathi-Nin. The great Assyrian Empire, which thus absorbed ancient Babylonia, lasted between six and seven hundred years, according to Herodotus, although recent discoveries and inscriptions make its continuance much longer, and was the dominant power of Asia during the most interesting period of Jewish history, until taken by Cyaxares the Median. The limits of the empire varied at different times, for the conquered States which composed it were held together by a precarious tenure. But even in its greatest strength it was inferior in size and power to the Empire of Cyrus. To check rebellion,–a source of constant trouble and weakness,–the warlike monarchs were obliged to reconquer, imposing not only tribute and fealty, but overrunning the rebellious countries with fire and sword, and carrying away captive to distant cities a large part of the population as slaves. Thus at one time two hundred thousand Jews were transported to Assyria, and the "Ten Tribes" were scattered over the Eastern world, never more to return to Palestine.
On the rebellion of Nabopolassar, in 625 B.C., Babylon recovered not only its ancient independence, but more than its ancient prestige; yet the empire of which it was the capital lasted only about the same length of time as Media and Lydia,–the most powerful monarchies existing when Cyrus was born. Babylon, however, during its brief dominion, after having been subject to Assyria for seven hundred years, reappeared in unparalleled splendor, and was probably the most magnificent capital the ancient world ever saw until Rome arose. Even after its occupancy by the Persian monarchs for two hundred years, it called out the admiration of Herodotus and Alexander alike. Its arts, its sciences, its manufactures, to say nothing of its palaces and temples, were the admiration of travellers. When the proud conqueror of Palestine beheld the magnificence he had created, little did he dream that "this great Babylon which he had built" would become such a desolation that its very site would be uncertain,–a habitation for dragons, a dreary waste for owls and goats and wild beasts to occupy.
We should naturally suppose that Cyrus, with the kings of Asia prostrate before his satraps, would have been contented to enjoy the fruits of his labors; but there is no limit to man's ambition. Like Alexander, he sought for new worlds to conquer, and perished, as some historians maintain, in an unsuccessful war with some unknown barbarians on the northeastern boundaries of his empire,–even as Caesar meditated a war with the Parthians, where he might have perished, as Crassus did. Unbounded as is human ambition, there is a limit to human aggrandizement. Great conquerors are raised up by Providence to accomplish certain results for civilization, and when these are attained, when their mission is ended, they often pass away ingloriously,–assassinated or defeated or destroyed by self-indulgence, as the case may be. It seems to have been the mission of Cyrus to destroy the ascendency of the Semitic and Hamitic despotisms in western Asia, that a new empire might be erected by nobler races, who should establish a reign of law. For the first time in Asia there was, on the accession of Cyrus to unlimited power, a recognition of justice, and the adoration of one supreme deity ruling in goodness and truth.
This may be the reason why Cyrus treated the captive Jews with so great generosity, since he recognized in their Jehovah the Ahura-Mazda,–the Supreme God that Zoroaster taught. No political reason will account for sending back to Palestine thousands of captives with imperial presents, to erect once more their sacred Temple and rebuild their sacred city. He and all the Persian monarchs were zealous adherents of the religion of Zoroaster, the central doctrine of which was the unity of God and Divine Providence in the world, which doctrine neither Egyptian nor Babylonian nor Lydian monarchs recognized. What a boon to humanity was the restoration of the Jews to their capital and country! We read of no oppression of the Jews by the Persian monarchs. Mordecai the Jew became the prime minister of such an effeminate monarch as Xerxes, while Daniel before him had been the honored minister of Darius.
Of all the Persian monarchs Cyrus was the best beloved. Xenophon made him the hero of his philosophical romance. He is represented as the incarnation of "sweetness and light." When a mere boy he delights all with whom he is brought into contact, by his wit and valor. The king of Media accepts his reproofs and admires his wisdom; the nobles of Media are won by his urbanity and magnanimity. All historians praise his simple habits and unbounded generosity. In an age when polygamy was the vice of kings, he was contented with one wife, whom he loved and honored. He rejected great presents, and thought it was better to give than to receive. He treated women with delicacy and captives with magnanimity. He conducted war with unknown mildness, and converted the conquered into friends. He exalted the dignity of labor, and scorned all baseness and lies. His piety and manly virtues may have been exaggerated by his admirers, but what we do know of him fills us with admiration. Brilliant in intellect, lofty in character, he was an ideal man, fitted to be the guide of a noble nation whom he led to glory and honor. Other warriors of world-wide fame have had, like him, great excellencies, marred by glaring defects; but no vices or crimes are ascribed to Cyrus, such as stained the characters of David and Constantine. The worst we can say of him is that he was ambitious, and delighted in conquest; but he was a conqueror raised up to elevate a religious race to a higher plane, and to find a field for the development of their energies, whatever may be said of their subsequent degeneracy. "The grandeur of his character is well rendered in that brief and unassuming inscription of his, more eloquent in its lofty simplicity than anything recorded by Assyrian and Babylonian kings: 'I am Kurush [Cyrus] the king, the Achaemenian.'" Whether he fell in battle, or died a natural death in one of his palaces, he was buried in the ancient but modest capital of the ancient Persians, Pasargadae; and his tomb was intact in the time of Alexander, who visited it,–a sort of marble chapel raised on a marble platform thirty-six feet high, in which was deposited a gilt sarcophagus, together with Babylonian tapestries, Persian weapons, and rare jewels of great value. This was the inscription on his tomb: "O man, I am Kurush, the son of Kambujiya, who founded the greatness of Persia and ruled Asia; grudge me not this monument."
Cyrus was succeeded by his son Cambyses, who though not devoid of fine qualities was jealous and tyrannical. He caused his own brother Smerdis to be put to death. He completed the conquests of his father by adding Egypt to his empire. In a fit of remorse for the murder of his brother he committed suicide, and the empire was usurped by a Magian impostor, called Gaumata, who claimed to be the second son of Cyrus. His reign, however, was short, he being slain by Darius the son of Hystaspes, belonging to another branch of the royal family. Darius was a great general and statesman, who reorganized the empire and raised it to the zenith of its power and glory. It extended from the Greek islands on the west to India on the east. This monarch even penetrated to the Danube with his armies, but made no permanent conquest in Europe. He made Susa his chief capital, and also built Persepolis, the ruins of which attest its ancient magnificence. It seems that he was a devout follower of Zoroaster, and ascribed his successes to the favor of Ahura-Mazda, the Supreme Deity.
It was during the reign of Darius that Persia came in contact with Greece, in consequence of the revolt of the Ionian cities of Asia Minor, which, however, was easily suppressed by the Persian satrap. Then followed two invasions of Greece itself by the Persians under the generals of Darius, and their defeat at Marathon by Miltiades.
Darius was succeeded by Xerxes, the Ahasuerus of the Hebrew Scriptures, whose invasion of Greece with the largest army the world ever saw properly belongs to Grecian history. It was reserved for the heroes of Plataea to teach the world the lesson that the strength of armies is not in multitudes but in discipline,–a lesson confirmed by the conquests of Alexander and Caesar.
On the fall of the Persian Empire three hundred years after the fall of Babylon, and the establishment of the Greek rule in Asia under the generals of Alexander, Persia proper did not cease to be formidable. Under the Sassanian princes the ambition of the Achaemenians was revived. Sapor defied Rome herself, and dragged the Emperor Valerian in disgraceful captivity to Ctesiphon, his capital. Sapor II. was the conqueror of the Emperor Julian, and Chrosroes was an equally formidable adversary.