Such were the causes of the animosity between Persians and Greeks as Herodotus conceived them. But the modern historian gives scant credence to these tales. In reality we do not have to go back to the abduction of Io and Helen by the Asiatics, and of Europa and Medea by the Greeks to explain this mutual hate. Equally trivial are such incidents as the flight of the physician Democedes, who deceived Darius that he might return to his native Croton; and the desire of the queen, Atossa, to include Spartan and Athenian women among her slaves. The appeals of Hippias to be reinstated in Athens, and of the Aleuadæ of Thessaly to be delivered from the enemies that oppressed them had, to be sure, a somewhat more serious influence. But the real cause was Persia’s power. This empire had at that time attained its natural limits. Being nearly surrounded by deserts, the sea, wide rivers, and high mountains, there was but one direction in which she could expand, the northwest; and on that side lay a famous country, Greece, whose independence affronted the pride of the Great King. Cyrus had conquered Asia; Cambyses a part of Africa, so Darius, not to be outdone by his predecessors, attacked Europe. The Sardian satrap, Artaphernes, had already replied to the overtures of Clisthenes by demanding that Athens should come under the rule of the Great King. Darius had reorganised his empire and restored in his provinces the order so rudely shaken by the usurpation of the Magian and the efforts of the conquered nations to regain their freedom; it was necessary moreover to furnish occupation for the warlike ardour which still characterised the Persians. With this end in view he planned an important expedition. The Scythians had formerly invaded Asia; it was the recollection of that injury and the desire to subjugate Thrace which adjoined his own empire that pointed out to Darius the route he was to follow. He set out from Susa with a numerous army, crossed the Bosporus on a bridge of boats constructed by the Samian, Mandrocles, and entered Europe bringing seven or eight hundred thousand men in his train, among whom were some Asiatic Greeks commanded by the tyrants of the various cities. He traversed Thrace, crossed the Danube (Ister) on a bridge of boats which he left the Greeks to guard, then penetrated well into Scythia in pursuit of an enemy whom it was impossible to seize. Darius had told the Greeks not to expect him to return after the expiration of sixty days. This time having passed without news of him, the Athenian, Miltiades, tyrant of the Chersonesus, proposed to destroy the bridge that the way into Thrace might not be left open to the Scythians whom he supposed victorious, also that the Persian army might be destroyed by them should it still exist. Histiæus of Miletus opposed this plan, representing to the chiefs, who were all tyrants of Greek cities, that they would surely be overthrown the day they lost the support of their great leader. This reasoning saved Darius, who, returning from his vain pursuit, left with Megabyzus eighty thousand men to complete the subjugation of Thrace, and also to conquer Macedonia.
Megabyzus conquered Perinthus, that part of Thrace which still resisted, Pæonia, and called upon the king of Macedonia to render him homage of earth and water. Amyntas accorded this, and Megabyzus was able to report to his master that the Persian empire at last adjoined Greece in Europe. With this the expedition came to an end. Histiæus’ services were rewarded by the gift of a vast territory on the banks of the Strymon. The site had been well chosen, near the gold and silver mines of Mount Pangæ, at the foot of hills rich in building woods and near the mouth of a river that offered an excellent port on the Ægean Sea. Myrcinus, founded there by Histiæus, would soon have attained the growth and prosperity that were to signalise Amphipolis later on the same spot, had not Megabyzus, in alarm, warned the king of the necessity of preventing this Greek from carrying out the plans he meditated. Histiæus was summoned to Sardis on pretext of being needed for an important consultation, and once there, Darius told him simply that he could not do without his friendship and advice. Histiæus was obliged to accept these gilded chains.
THE IONIC REVOLT
[499-494 B.C.]