16. But the war was not yet over. A single defeat did not extinguish the hopes of the Persian monarch, nor exhaust the resources of his empire. Herodotus says: "Now Darius was very bitter against the Athenians, and when he heard the tale of the battle of Marathon he was much more wroth, and desired much more eagerly to march against Hellas. Straightway he sent heralds to all the cities, and bade them make ready an army, and to furnish much more than they had done before, both ships, and horses, and corn; and while the heralds were going round, all Asia was shaken for three years; but in the fourth year the Egyptians, who had been made slaves by Cambyses, rebelled against the Persians, and then the king sought only the more vehemently to go both against the Egyptians and against the Greeks. So he named Xerxes, his son, to be king over the Persians after himself, and made ready to march. But in the year after the revolt of Egypt, Darius himself died; nor was he suffered to punish the Athenians or the Egyptians who had rebelled against him." 17. The death of Darius gave Greece a respite, but the final conflict was only postponed. Xerxes was weak, obstinate, and vain-glorious, but he inherited all his father's hatred of the Greeks, and he resolved upon one supreme effort to reduce them to subjection. For seven years more the whole vast Persian empire resounded with the notes of preparation. In 480 B.C., ten years after the battle of Marathon, everything was in readiness. A formidable fleet had been built and equipped, corn and military stores had been collected to a vast amount, and an army had gathered which, including camp followers, was variously estimated at from three to five millions. A bridge of boats was built across the Hellespont, and the Oriental horde was prepared to ravage the Grecian valleys like a swarm of devouring locusts. A great storm arose and destroyed the bridge, and the Persian despot ordered the Hellespont scourged with whips in token of his displeasure. When the bridge was rebuilt, Xerxes, from a throne erected upon the shore, for seven days and nights, watched his mighty host pass over from Asia into Europe.