3)
Historical development
Cultural background
Human occupation of Mesopotamia—“the land between the rivers” (i.e., the
Tigris and Euphrates)—seems to reach back farthest in time in the north (
Assyria), where the earliest settlers built their small villages some time around 6000 bce. The prehistoric cultural stages of
Ḥassūna-Sāmarrāʿ and
Ḥalaf (named after the sites of archaeological excavations) succeeded each other here before there is evidence of settlement in the south (the area that was later called Sumer). There the earliest settlements, such as
Eridu, appear to have been founded about 5000 bce, in the late Ḥalaf period. From then on the cultures of the north and south move through a succession of major archaeological periods that in their southern forms are known as Ubaid, Warka, and Protoliterate (during which
writing was invented), at the end of which—shortly after 3000 bce—recorded history begins. The historical periods of the 3rd millennium are, in order, Early Dynastic,
Akkad, Gutium, and 3rd
dynasty of
Ur; those of the 2nd millennium are Isin-Larsa, Old Babylonian,
Kassite, and Middle Babylonian; and those of the 1st millennium are Assyrian, Neo-Babylonian, Achaemenian, Seleucid, and Parthian.
Politically, an early division of the country into small independent city-states, loosely organized in a league with the centre in
Nippur, was followed by a unification by force under King
Lugalzagesi (c. 2375–2350 bce) of
Uruk, just before the Akkadian period. The unification was maintained by his successors, the kings of Akkad, who built it into an empire, and—after a brief interruption by Gutian invaders—by
Utu-hegal (c. 2116–c. 2110 bce) of Uruk and the rulers of the 3rd dynasty of Ur (c. 2112–c. 2004 bce). When Ur fell, about 2000 bce, the country again divided into smaller units, with the cities
Isin and
Larsa vying for
hegemony. Eventually
Babylon established a lasting national state in the south, while
Ashur dominated a similar rival state, Assyria, in the north. From the 1st millennium bce onward, Assyria built an empire
comprising, for a short time, all of the
ancient Middle East. This political and administrative achievement remained essentially intact under the following Neo-Babylonian and
Persian kings down to the conquests of
Alexander the Great (331 bce).