Recorded history
More complete writing systems were preceded by proto-writing. Early examples are the Jiahu symbols (c. 6600 BCE), Vinča signs (c. 5300 BCE), early Indus script (c. 3500 BCE) and Nsibidi script (c. before 500 CE). There is disagreement concerning exactly when prehistory becomes history, and when proto-writing became "true writing" However, invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age in the late Neolithic of the late 4th millennium BCE. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400–3200 BCE with earliest coherent texts from about 2600 BCE.
Spurlock Museum
This collection of approximately 1750 inscribed tablets from ancient sites of Umman and Drehem in Mesopotamia dates from the Third Dynasty of Ur in the 21st and 20th centuries BCE to the Neo-Babylonian and early Persian periods(ca. 625-520 BCE). This collection includes texts written in both the Sumerian and the Akkadian languages. The script called cuneiform, is the earliest writing system in the world.