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3500 BCE
Writing begins
Writing begins to be developed. At first this is based on pictograms, and takes about a thousand years to evolve into a full cuneiform script. -
2300 BCE
First empire
King Sargon of Akkad starts conquering the first empire in world history. The empire reaches its height in c. 2220. -
2100 BCE
City of Ur becomes the center
The city of Ur becomes the centre of a powerful Mesopotamian state. It soon falls into decline. This marks the decline of the Sumerians as the Amorites, a nomadic people, start moving into Mesopotamia.