Evolution & life

Sumer

from 56th century BCE to 20th century BCE

Sumer was an early urban civilization in southern Mesopotamia, in what is now southern Iraq, between the Tigris and Euphrates rivers. Its independent city-states, among them Uruk, Ur, Lagash and Eridu, were built around temples and depended on irrigated agriculture. The Sumerians are credited with developing cuneiform, one of the earliest writing systems, around the late fourth millennium BCE, and with the first monumental stepped temples known as ziggurats. Their cities were united by Sargon of Akkad in the twenty-fourth century BCE, and the Third Dynasty of Ur later revived Sumerian rule. Political power passed to other peoples around 2000 BCE, but the Sumerian language survived for centuries as a language of religion and scholarship.

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The era

This moment belongs to the Human prehistory (300,000 years ago to 3,200 BCE), the human story before writing.