Suffice it to say, that with Yezdezird, the forty-fifth king in the descent of the race of Kaimurs, ended the ancient Persian monarchy. The neighbouring and wealthy empire of Persia presented too tempting a prize to the fanatic and ambitious spirit, evoked by Mahomed, to remain long unmolested, and in the middle of the seventh century of the Christian era, the Arab sword invaded Persia, under Caliph Omar. In a fierce and well-contested battle with the Persians at the village of Nahavand, about fifty miles from the ancient city of Ecbatana, the fate of the empire was decided.....Yezdezird, abandoning his kingdom as lost, fled the country; and after wandering in solitude and disguise for a period of ten years, was at last treacherously slain by a miller to whom the secret of his identity had been confided (651 AD). ....
Thus on the conquest of Persia, the Mahomedan soldiers of the Caliphat of Baghdad traversed the length and breadth of the country, presenting the alternative of death or the Koran, and compelling the conquered nation to accept the one or the other. By these oppressive and cruel means, a hundred thousand persons are said to have daily abjured the faith of there forefathers; and the fire-temples and other sacred places were destroyed or converted into mosques.