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.
Ancient history
The Zapotec emerged around 1500 years BC. They left behind the great city Monte Alban. Their writing system had been thought to have influenced the Olmecs but, with recent evidence, the Olmec may have been the first civilization in the area to develop a true writing system independently. At the present time, there is some debate as to whether or not Olmec symbols, dated to 650 BC, are actually a form of writing preceding the oldest Zapotec writing dated to about 500 BC.