The history of Sumer spans through the 5th to 3rd millennia BCE in southern Mesopotamia, and is taken to include the prehistoric Ubaid and Uruk periods.
The Sumerians claimed that their civilization had been brought, fully formed, to the city of Eridu by their god Enki or by his advisor (or Abgallu from ab=water, gal=big, lu=man), Adapa U-an (the Oannes of Berossus).
The work required in maintaining irrigation canals called for, and the resulting surplus food enabled, relatively concentrated populations.
The centres of Eridu and Uruk, two of the earliest cities, had successively elaborated large temple complexes built of mud brick.
From south to north, the principal temple-cities, their principal temple complex, and the gods they served,[1] were Before 3000 BCE the political life of the city was headed by a priest-king (ensi) assisted by a council of elders[2] and based on these temples, but it is unknown how the cities had secular rulers rise in prominence from the earliest times.
Hegemony, which came to be conferred by the Nippur priesthood, alternated among a number of competing dynasties, hailing from Sumerian city-states traditionally including Kish, Uruk, Ur, Adab and Akshak, as well as some from outside of southern Mesopotamia, such as Awan, Hamazi, and Mari, until the Akkadians, under Sargon of Akkad, overtook the area.
The earliest Dynastic name on the list known from other legendary sources is Etana, whom it calls "the shepherd, who ascended to heaven and consolidated all the foreign countries".
Among the 11 kings who followed, a number of Semitic Akkadian names are recorded, suggesting that these people made up a sizable proportion of the population of this northern city.
The earliest monarch on the list whose historical existence has been independently attested through archaeological inscription is En-me-barage-si of Kish (c. 2600 BC), said to have defeated Elam and built the temple of Enlil in Nippur.
Ancient, fragmentary copies of this text have been discovered in locations as far apart as Hattusas in Anatolia, Megiddo in Israel, and Tell el Amarna in Egypt.
Mesilim's placement before, during, or after the reign of Mesannepada in Ur is uncertain, owing to the lack of other synchronous names in the inscriptions, and his absence from the king list.
Following this period, the region of Mesopotamia seems to have come under the sway of a Sumerian conqueror from Adab, Lugal-Ane-mundu, ruling over Uruk, Ur, and Lagash.
The Third Dynasty of Kish, represented solely by Kug-Bau or Kubaba, is unique in the fact that she was the only woman named on the king-list to reign as "king".
Following the hegemony of Mesannepada of Ur, Ur-Nanshe succeeded Lugal-sha-engur as the new high priest of Lagash and achieved independence, making himself king.
Eannatum, grandson of Ur-Nanshe, made himself master of the whole of the district of Sumer, together with the cities of Uruk (ruled by Enshakushana), Ur, Nippur, Akshak, and Larsa.
[24] Umma was made tributary—a certain amount of grain being levied upon each person in it, that had to be paid into the treasury of the goddess Nina and the god Ningirsu.
[24] Eannatum's campaigns extended beyond the confines of Sumer, and he overran a part of Elam, took the city of Az on the Persian Gulf, and exacted tribute as far as Mari; however many of the realms he conquered were often in revolt.
During his reign, temples and palaces were repaired or erected at Lagash and elsewhere; the town of Nina[citation needed]—that probably gave its name to the later Niniveh—was rebuilt, and canals and reservoirs were excavated.
[24] A frieze of lions devouring ibexes and deer, incised with great artistic skill, runs round the neck, while the eagle crest of Lagash adorns the globular part.
The Semites ended up prevailing in Mesopotamia by the time of Hammurabi of Babylon, who founded the Babylonian Empire, and the language and name of Sumer gradually passed into the realm of antiquarian scholars.
[26] The influence of Sumerian on Akkadian (and vice versa) is evident in all areas, from lexical borrowing on a massive scale, to syntactic, morphological, and phonological convergence.