Nevertheless the fact remains that the civilisation of the Sabæans need scarcely be taken into account in determining the place of Arabia in history. It counts for less than the inferior civilisation of other nations less remote from the main theatre of events. The principal scene of the old quarrel of East and West, which had presented itself so vividly to the eyes of the Greeks in the Persian wars, in the last century before Christ was transferred to Syria and the countries about the Euphrates and Tigris. The Arabs of the northern districts were drawn into the struggle of the Romans with the Parthians and Persians. They were always available for pillaging the enemy’s territory or harassing their compatriots on the other side. It was hardly possible for the great powers to rule the desert, and it would have been a somewhat thankless task; but they could influence the Bedouins strongly by various indirect methods. The Arab dynasties in the frontier districts were particularly useful for the purpose; they occupied a position of independence none too strict, and were invariably regarded with suspicion, but they could keep their savage kinsmen, with whom they were constantly in touch, far more effectually in check than regular imperial or royal officials could have done. In this connection the Christian phylarchs of the tribe of Ghassan are worthy of special mention on the Roman side. Their capital was not far from Damascus and they played a somewhat important part in the events of the sixth century. On the Persian side there were for many years the vassal kings of the tribe of Lakhm, which dwelt in the important city of Hira, near the ancient Babylon. Both dynasties were respected and feared nearly as far as the confines of Arabia. Some scattered monarchies had likewise arisen in the interior of the country. In particular, we know of some sovereigns of a family of the Kinda tribe, whose home was at Hadramaut, far to the south; they ruled with vigour in various parts of Arabia, much like the princes of the Haïl dynasty at the present day.