Sumer
Sumer () is the earliest known civilization in the historical region of southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and Early Bronze ages, and one of the first civilizations in the world along with Ancient Egypt and the Indus Valley. Living along the valleys of the Tigris and Euphrates, Sumerian farmers were able to grow an abundance of grain and other crops, the surplus of which enabled them to settle in one place. Prehistoric proto-writing dates back before 3000 BC. The earliest texts, from c. 3300 BC, come from the cities of Uruk and Jemdet Nasr; early cuneiform script emerged around 3000 BC.
Vinča symbols
The importance of these findings lies in the fact that the bulk of the Vinča symbols were created in the period between 4500 and 4000 BC, with the ones on the Tărtăria clay tablets possibly dating back to around 5300 BC (controversially dated by association). This means that the Vinča finds predate the proto-Sumerian pictographic script from Uruk (modern Iraq), which is usually considered to be the oldest known writing system, by more than a thousand years. Analyses of the symbols showed that they have little similarity with Near Eastern writing, leading to the view that these symbols and the Sumerian script probably arose independently.