In the course of the second dynasty it received a vast increase, being carried in one direction to the Elamitic mountains, and in another to the Mediterranean, by the conquest of Kudur-Nakhunta and Chedor-laomer.

On the defeat of the latter prince it again contracted, though to what extent we have no means of determining.

It is probable that Elam or Susiana, and not unlikely that the Euphrates valley, for a considerable distance above Hit, formed parts of the Chaldaean Empire after the loss of Syria and Palestine.

Assyria occupied a similar position, at any rate from the time of Ismi-dagon, whose son built a temple at Kileh-Sherghat or Asshur.
There is reason to think that the subjection of Assyria continued to the very end of the dynasty, and that this region, whose capital was at Kileh-Sherghat, was administered by viceroys deriving their authority from Chaldaean monarchs.

These monarchs, as has been observed, gradually removed their capital more and more northwards; by which it would appear as if their empire tended to progress in that direction.
The different dynasties which ruled in Chaldaea prior to the establishment of Assyrian influence, whether Chaldaean, Susianian, or Arabian, seem to have been of kindred race; and, whether they established themselves by conquest, or in a more peaceful manner, to have made little, if any, change in the language, religion, or customs of the Empire.