The prosperity of a country depends in part upon the laborious industry of the inhabitants, in part upon their numbers. Chosroes regarded Persia as insufficiently peopled, and made efforts to increase the population by encouraging and indeed compelling marriage. All marriageable females were required to provide themselves with husbands; if they neglected this duty, the government interfered, and united them to unmarried men of their own class. The pill was gilt to these latter by the advance of a sufficient dowry from the public treasury, and by the prospect that, if children resulted from the union, their education and establishment in life would be undertaken by the state. Another method of increasing the population, adopted by Chosroes to a certain extent, was the settlement within his own territories of the captives whom he carried off from foreign countries in the course of his military expeditions. The most notorious instance of this policy was the Greek settlement, known as Rumia (Rome), established by Chosroes after his capture of Antioch (A.D. 540), in the near vicinity of Ctesiphon. Oriental monarchs, in many respects civilized and enlightened, have often shown a narrow and unworthy jealousy of foreigners. Chosroes had a mind which soared above this petty prejudice. He encouraged the visits of all foreigners, excepting only the barbarous Turks, readily received them at his court, and carefully provided for their safety. Not only were the roads and bridges kept in the most perfect order throughout his territories, so as to facilitate locomotion, but on the frontiers and along the chief lines of route guard-houses were built and garrisons maintained for the express purpose of securing the safety of travellers. The result was that the court of Chosroes was visited by numbers of Europeans, who were hospitably treated, and invited, or even pressed, to prolong their visits.