The first danger to be provided against by the new scheme was caused by the isolation and comparative independence of the provincial governors, especially in the remoter provinces of the empire. It is a form of danger common to all great empires at all ages of the world, one against which the central government must ever make provision. Darius’ solution of the difficulty was conceived on much the same lines as were followed in later days by the Cæsars in dealing with the Cæsarean provinces of the Roman empire. ORGANIZATION OF THE PERSIAN EMPIRE. Not merely was the area of administration of the governor limited within the province, but also his actions were placed under immediate observation by the appointment of high officials, with special departments of their own, who were not under his control, but were directly responsible to the head of the empire. The plan had its disadvantages from the point of view of the governed; and there were doubtless many instances in which the subjects of the Great King, like the Roman provincial of later days, complained that Tac Agric. 15. “discord and harmony between those set over them were alike disastrous to those they ruled.” For the end for which it was devised, however, the method seems to have been effective.

The empire was divided into satrapies, whose number varied from twenty to twenty-eight at different periods of Darius’ reign.[3] Persia proper was alone excluded, receiving special treatment as the home of the ruling race.

The civil and military powers in these satrapies or provinces were divided. Three independent officials, with separate departments of administration, were appointed to each. In the case of important provinces the satraps were generally drawn from great families connected with the Achæmenids; but in the case of the others the field of choice seems to have been practically unlimited, and governors were selected from among the comparatively poor as well as from the wealthy, from the subject races as well as from the Persians. The instances in which persons not of Persian or Medic extraction were appointed to these important posts seem, however, to have been rare and exceptional. There was no set period for the tenure of the office. The duration of the governor’s administration depended on the pleasure of the Great King.

In all civil matters the governor had absolute authority. He controlled the administration of the taxes and the dispensation of justice; he possessed the power of life and death. As viceroy, representing the king, he was allowed to maintain a court and bodyguard, with other minor attributes of regal power. Under ordinary circumstances he neither commanded nor even controlled the military forces in his province; in fact, a common policy of the central government seems to have been to place a personal enemy of the governor in command of the troops, whose relations with the king were, of course, direct. It may be that under exceptional circumstances,—as, for instance, when Artaphernes was satrap of Sardes at the time of the Ionian revolt,—the supreme direction of military operations was entrusted to a governor of peculiarly high distinction.

The secretary of state within the province was a third official who had immediate relations to the king. Though nominally the chief assistant of the governor, he was in reality appointed to watch his conduct, and to report irregularities or suspicious circumstances to the central government at Susa.

In his general relations with the subject populations and vassal kingdoms, the Persian seems to have followed a policy of forbearance and liberality which is extraordinary at that period. The language, customs, religion, and local laws of the various peoples were respected; even their rulers were in many cases allowed to remain in power, provided always that their rule was in conformity with Persian interests. The Greek cities of Asia are an instance in point. They were allowed to retain such local self-government as they had possessed under their Lydian suzerain, with the exception that, for any democracies which had existed in them, either an aristocracy, or a Greek tyrant ruling in the Persian interest, was substituted. Such was the case, at any rate, before the Ionian revolt Motives of self-interest obviously contributed to this policy. The maintenance of local institutions in the empire, and the avoidance of complete unification, were eminently calculated to keep the various populations separate, and to prevent the spread of any rebellion over a wide area. To use a modern simile, the provinces were converted, in so far as possible, into compartments fireproof against the flame of insurrection.

There can be no question that, throughout the vast area of the empire as a whole, the condition of the population generally was greatly ameliorated in comparison with its life in the past. Precautions were taken to safeguard the subject from oppression by high officials. Apart from the check which the triple division of direct responsibility placed on the arbitrary exercise of power, a special body of officers, known to the Greeks as the king’s “eyes” or “ears,” went on annual circuits through the empire, and reported any case of abuse in the administration. The intention, at any rate, was good; though it may be doubted whether the system could guarantee the provincial from acts of oppression on the part of officials who had a mind to act in arbitrary fashion.

But there was another most important side to the policy of the government. The ordinary conditions of daily life within the empire were certainly made much better than they had been before its establishment. It was to the interest of the government to preserve peace, an inestimable blessing to a continent which only knew the peace of exhaustion. Petty states were no longer allowed to wage war on one another. Life became more secure. The highways of the land and sea were rendered safe by the suppression of brigandage and piracy. The great roads were improved in character, to the benefit of internal trade. Moreover, to facilitate trade, and for the convenience of the revenue, Darius instituted a system of currency, whose coins were notorious for the purity of their metal. The gold Daric became, indeed, the sovereign of the ancient trading world; for the Greeks had not command of a sufficient supply of the precious metal to introduce a gold standard into their coinage system. The encouragement of agriculture, and the bringing of waste lands into cultivation, was not merely a part of the policy of the government; it was actually inculcated by the Persian religion.

The revenue and taxation of the empire was conducted on business-like principles during the days of Darius; and though the burdens imposed on the subject populations were not light, yet, on the whole, they received a fair return for their contributions in the shape of that prosperity which followed upon the greater security they enjoyed. The financial levy was either in money or in kind, or in both, according to the nature and products of a province. The great defect of the system was, however, that the satraps, after handing over the provincial quota to the imperial treasury, had thereafter to raise from the province the expenses of themselves and their following. Given a strong central government and a good satrap, the system was probably as free from abuse as such a system could be; but if, as must too often have been the case, either of these circumstances were unfavourable, much evil must have resulted to the subject populations, and many of the outbreaks which took place must be assigned to such a cause.

In all probability, however, the heaviest burden laid upon the provincial population was the obligation to furnish contingents for the army of the empire. Considering the nature of the monarchy, the actual standing army seems to have been curiously small, little more, in fact, than what was necessary for the maintenance of peace within the frontiers. In case, therefore, of external war, unsparing levies of the subject population were inevitable. The burden seems also to have been unevenly distributed: it would naturally fall most heavily on those peoples who made the most effective soldiers. From a military point of view, this feature of the imperial system was a mistake. An army formed of heterogeneous elements deficient in military training cannot under such a system have been welded into one harmonious whole. Only its multitude could be strikingly formidable.