The Persian King survived to be hunted a year later, and caught, a dying man, on the road to Central Asia; but long before that and without another pitched battle the Persian throne had passed to Alexander. Within six months he had marched to and entered in turn, without other let or hindrance than resistance of mountain tribesmen in the passes, the capitals of the Empire--Babylon, Susa, Persepolis, Ecbatana; and since these cities all held by him during his subsequent absence of six years in farther Asia, the victory of the West over the Ancient East may be regarded as achieved on the day of Arbela.
Less than ten years later, Alexander lay dead in Babylon. He had gone forward to the east to acquire more territories than we have surveyed in any chapter of this book or his fathers had so much as known to exist. The broad lands which are now Afghanistan, Russian Turkestan, the Punjab, Scinde, and Beluchistan had been subdued by him in person and were being held by his governors and garrisons. This Macedonian Greek who had become an emperor of the East greater than the greatest theretofore, had already determined that his Seat of Empire should be fixed in inner Asia; and he proposed that under his single sway East and West be distinct no longer, but one indivisible world, inhabited by united peoples. Then, suddenly, he was called to his account, leaving no legitimate heir of his body except a babe in its mother's womb. What would happen? What, in fact, did happen?
It is often said that the empire which Alexander created died with him. This is true if we think of empire as the realm of a single emperor. As sole ruler of the vast area between the Danube and the Sutlej Alexander was to have no successor. But if we think of an empire as the realm of a race or nation, Greater Macedonia, though destined gradually to be diminished, would outlive its founder by nearly three hundred years; and moreover, in succession to it, another Western empire, made possible by his victory and carried on in some respects under his forms, was to persist in the East for several centuries more. As a political conquest, Alexander's had results as long lasting as can be credited to almost any conquest in history. As the victory of one civilization over another it was never to be brought quite to nothing, and it had certain permanent effects. These this chapter is designed to show: but first, since the development of the victorious civilization on alien soil depended primarily on the continued political supremacy of the men in whom it was congenital, it is necessary to see how long and to what extent political dominion was actually held in the East by men who were Greeks, either by birth or by training.