After his victory over Kudur-lagamar, Khammurabi assumed the title of King of Martu,* which we find still borne by Ammisatana sixty years later.** We see repeated here almost exactly what took place in Ethiopia at the time of its conquest by Egypt: merchants had prepared the way for military occupation, and the civilization of Babylon had taken hold on the people long before its kings had become sufficiently powerful to claim them as vassals. The empire may be said to have been virtually established from the day when the states of the Middle and Lower Euphrates formed but one kingdom in the hands of a single ruler. We must not, however, imagine it to have been a compact territory, divided into provinces under military occupation, ruled by a uniform code of laws and statutes, and administered throughout by functionaries of various grades, who received their orders from Babylon or Susa, according as the chances of war favoured the ascendency of Chaldaea or Elam. It was in reality a motley assemblage of tribes and principalities, whose sole bond of union was subjection to a common yoke. * It is, indeed, the sole title which he attributes to himself on a stone tablet now in the British Museum. ** In an inscription by this prince, copied probably about the time of Nabonidus by the scribe Belushallim, he is called "king of the vast land of Martu." They were under obligation to pay tribute, and furnish military contingents and show other external marks of obedience, but their particular constitution, customs, and religion were alike respected: they had to purchase, at the cost of a periodical ransom, the right to live in their own country after their own fashion, and the head of the empire forbore all interference in their affairs, except in cases where the internecine quarrels and dissensions threatened the security of his suzerainty. Their subordination lasted as best it could, sometimes for a year or for ten years, at the end of which period they would neglect the obligations of their vassalage, or openly refuse to fulfil them: a revolt would then break out at one point or another, and it was necessary to suppress it without delay to prevent the bad example from spreading far and wide. The empire was maintained by perpetual re-conquests, and its extent varied with the energy shown by its chiefs, or with the resources which were for the moment available.