The Sumerian Civilization (3300-1900 BC)

From about 5500 BC, the Ubaid culture settled the marshy southern plain of Mesopotamia and built irrigation canals that turned a harsh, flood-prone landscape into some of the richest farmland of the ancient world. Barley, dates, and fish produced surpluses far beyond subsistence, and with surplus came specialization: potters, weavers, priests, and administrators appear in the archaeological record for the first time. Ubaid pottery and temple plans spread across Mesopotamia, marking a shared cultural sphere from which the first cities would grow. The plain lacked stone, timber, and metal, forcing the settlers to trade grain for raw materials, a pattern that made Sumerian society commercial from its beginning.

Location: Southern Mesopotamia (Ubaid, Iraq)

During the Uruk period (c. 4000-3100 BC) settlements in southern Mesopotamia grew into true cities, and Uruk became the largest urban center on earth, housing perhaps 40,000 to 80,000 people behind a wall later celebrated as ten kilometers long. Temple complexes administered redistributive economies, cylinder seals stamped the first signatures of ownership and bureaucracy, and society stratified into elites, craftsmen, and dependent laborers. Uruk's influence spread its temple architecture, seal styles, and administrative techniques across the Near East, from Anatolia to Iran. The city's scale and organization were unmatched until the empires of the first millennium BC.

Location: Uruk (Warka, Iraq)

Around 3400 to 3200 BC, administrators at Uruk and neighboring Jemdet Nasr began impressing accounting records onto clay tablets, creating the earliest known writing on earth. What began as pictographic bookkeeping, recording grain, beer, sheep, and laborers owed to temples, evolved over centuries into cuneiform, a full script capable of expressing the Sumerian language, literature, and law. The Kish tablet of roughly 3500 BC is among the oldest known examples, and by about 2600 BC the script recorded coherent sentences. Writing transformed the scale at which human societies could organize, and every alphabetic script in the world descends in some measure from this Mesopotamian invention.

Location: Uruk, Iraq

In the Early Dynastic period Sumer was organized as a constellation of rival city-states, including Kish, Uruk, Ur, Eridu, Lagash, and Umma, each governed by an en or lugal (priest-king) and its temple establishment. The Sumerian King List records dynasties passing from city to city, and the wars between Lagash and Umma over the Gu-edinna border canal generated the era's richest archival record. Tradition placed Gilgamesh, later the hero of the world's first great epic, as king of Uruk around 2700 BC, a figure probably rooted in a real ruler. These compact, competitive states incubated the institutions, law, and literature of civilization at their most intense.

Location: Sumer (southern Iraq)

Around 2600 to 2400 BC the rulers of Ur were buried in the Royal Cemetery with extraordinary wealth and, in the most famous tombs, with retinues of attendants who appear to have accompanied their masters in death. Finds include Queen Puabi's golden headdress, the inlaid Standard of Ur depicting war and peace, lyres with bull's heads, and thousands of graves excavated by Leonard Woolley between 1922 and 1934 for the British Museum and Penn Museum. The burials reveal a stratified, luxurious, and violent society at the height of Early Dynastic prosperity. They remain among the most important archaeological discoveries ever made.

Location: Ur (Tell el-Muqayyar, Iraq)

The Stele of the Vultures, erected for Eannatum, ruler of Lagash, around 2450-2400 BC, commemorates his victory over neighboring Umma and is often cited as the earliest known war monument and among the first depictions of an army in formation. Carved with rows of helmeted spearmen in phalanx and vultures carrying off the fallen, it records a border dispute over the Gu-edinna canal justified by a sworn treaty that Umma's ruler broke. The stele shows that Sumerian warfare was organized, ideological, and documented, with kings claiming divine mandate for conquest. Its fragments, preserved in the Louvre, opened the systematic study of early warfare to historians.

Location: Lagash, Iraq

Around 2334 BC Sargon of Akkad overthrew Lugalzagesi of Umma, who had briefly united the Sumerian cities, and founded the Akkadian Empire, the first multi-ethnic empire in recorded history. For the first time the Sumerian city-states lost their independence, ruled by Akkadian-speaking kings from a new capital, with Semitic Akkadian rising alongside Sumerian as a written language. Sargon and his grandson Naram-Sin maintained control through the first permanent standing army and an imperial administration, and Naram-Sin took the unprecedented title "King of the Four Quarters." The conquest ended the Sumerian city-state world and began the imperial pattern that dominated Mesopotamia for the next two millennia.

Location: Akkad and Sumer (Mesopotamia)

After the Akkadian Empire collapsed under Gutian rule, the Sumerian revival of the Third Dynasty of Ur (c. 2112-2004 BC) produced the most centralized state of the ancient Near East. King Ur-Nammu promulgated the Code of Ur-Nammu, the oldest surviving written law code, predating Hammurabi by roughly three centuries, with fines in silver for most injuries and death only for homicide, adultery, and similar crimes. Under Ur-Nammu and his son Shulgi, the Great Ziggurat of Ur rose above the city, a standardized bureaucracy recorded every transaction, and Shulgi's reign built a road network with way stations across the empire. This last flowering of native Sumerian rule preserved and codified its civilization at its administrative peak.

Location: Ur, Iraq

In about 2004 BC Elamite raiders from the east sacked Ur and captured its last king, Ibbi-Sin, ending the Third Dynasty of Ur and native Sumerian rule forever. Amorite-speaking dynasties took over the former empire's cities, and the Sumerian language ceased to be spoken by around 1900 BC, surviving only as a written language of law, religion, and scholarship in Babylonian and Assyrian scribes' schools for another two millennia. The laments for Ur, the first great literature of a civilization's fall, mourned the destruction as divine punishment. Sumer's afterlife in cuneiform libraries gave later Mesopotamian and, ultimately, Western civilization its inheritance of mathematics, astronomy, and law.

Location: Ur, Iraq

The civilization of Sumer was unknown to history until 19th-century excavations and decipherment revealed it. Austen Henry Layard and Paul-Emile Botta dug the great Assyrian sites from 1842 onward, while Henry Rawlinson's copy of the Behistun trilingual inscription supplied the key to cuneiform. In 1857 the Royal Asiatic Society sent four scholars the same unpublished inscription independently, and their closely matching translations certified the decipherment. Sumerian, a language isolate unrelated to any neighbor, was soon recognized beneath the later Akkadian strata, and the excavation of Ur and other sites reconstructed the world's first civilization from buried clay.

Location: London, United Kingdom