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.
Outline of ancient history
Ancient history – study of "recorded" human history from the beginning of writing at about 3000 BC until the Early Middle Ages. The times "before writing" belong either to protohistory or to prehistory. The span of recorded history is roughly 5,000 – 5,500 years, beginning with Sumerian cuneiform, the oldest form of writing discovered so far. Although the ending date of ancient history is disputed, currently most Western scholars use the fall of the Western Roman Empire in 476 AD or the coming of Islam in 632 AD as the end of ancient history.