 c. 2500–2270 BC

The dynasty of Lagash, though omitted from the king list, is well attested through several important monuments and many archaeological finds.Although short-lived, one of the first empires known to history was that of Eannatum of Lagash, who annexed practically all of Sumer, including Kish, Uruk, Ur, and Larsa, and reduced to tribute the city-state of Umma, arch-rival of Lagash.In addition, his realm extended to parts of Elam and along the Persian Gulf.