This being a time when religion was intrinsic in the total world view, a king, and his queen, had their legitimacy from being descendants of the gods. The kings where, however, not gods like they could be in other cultures, like the Egyptian. There are exceptions to this, Akkadian king, Naram-Sin did claim to be a god in the 23rd century BCE.
Accounts on Mesopotamian kings are generally impersonal, granting little information about the skills of each ruler in conjuction with the successes and failures of each reign.
Ca. 2600 BCE, king of Lagash.
Ca. 2334-2279 BCE, king of Akkad.
1792-1750 BCE, king of Babylonia.
Ca. 1050-1032 or 1031 BCE, king of Assyria.
884 or 883-859 BCE, king of Assyria.
745-727 BCE, king of Assyria.
669-627 BCE, king of Assyria.
Ca. 635-561 BCE, king of Babylonia.
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