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3500 BCE
3400 BCE
3300 BCE
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3500 BCE: First written evidence of religion in the world recorded on Sumerian tablets.
3500 BCE: Cuneiform script developed by Sumerians.
3200 BCE: Cuneiform script further developed and advanced in the city of Uruk.
3000 BCE: Cuneiform script refined.
2900 BCE - 2334 BCE: Cuneiform script develops fully during the Early Dynastic Period of Mesopotamia.
2285 BCE - 2250 BCE: Life of Enheduanna, daughter of Sargon of Akkad, and world's first author known by name.
2150 BCE - 1400 BCE: The tales of Gilgamesh written which inform The Epic of Gilgamesh
1900 BCE - 1600 BCE: Composition of The Descent of Inanna.
1640 BCE - 1700 BCE: Written form of the Atrahasis Myth of the Great Flood.
647 BCE - 629 BCE: Extensive collection of clay tablets acquired known as Ashurbanipal's Library at Nineveh.
100 BCE: Cuneiform abandoned for alphabetic script.