Around 3500 BC, the Sumerians left the mountains of Central Asia in search of fertile land and arrived in southern Mesopotamia.
Because it is a region with little rainfall, from a very early age the Sumerians had to learn to divert and store the waters of the Tigris and Euphrates, and with that they were able to grow a great amount and variety of food.
Over time, cities were formed. Each city-state was governed by a patési, who, in addition to being the high priest, was the political and military chief.
According to research, the Sumerians were the inventors of writing. They wrote on clay boards, using a triangular-tipped stylus that left wedge-shaped marks. With this, the writing was called cuneiform writing.
Sumerian cities were always at war with each other as they wanted to extend their domination. This facilitated the action of the Akkadians, a people of Semitic origin who invaded the region and settled in northern Sumer.