Invention of writing in Sumer
Clay accounting tablets launch the age of writing

Scribes in the Sumerian city of Uruk began recording accounts with signs on clay tablets, which evolved into cuneiform. One of the world's first writing systems, it shaped Near Eastern culture for three millennia.
Wikipedia (Russian) · Wikipedia (English) · 33rd century BC
Did you know
Ötzi died in the Alps around 3300 BC, about when writing appeared in Sumerian Uruk. By the time the Great Pyramid was built, he had lain in the ice for some 700 years.