In a dry area they provided the water to irrigate, and so provided the food surplus on which a civilisation can evolve.
Sumer is an ancient civilization in Mesopotamia. It is the worlds first civilization. Mesopotamian means "The land between the rivers." The two rivers are the Tigris and Euphrates. Sumer is where the two rivers converge (converge means to come together).
The great nile river
The Euphrates and Tigris river system give Mesopotamia its name- it means "the land between two rivers".
Mesopotamia
In the Tigris and Euphrates river valleys. In Greek meso = middle, potomos =river, middle of the two rivers.
Mesopotamian (means land in-between the rivers) a+ ;)
Tigris and Euphrates.
The Tigris and the Euphrates.
Mesopotamian
Mesopotamian civilization develped by Egypt(and included some of its land) and between the Mediterranean Sea and Persian Gulf. The civilization was centralized in the fertile cresant between the Euphrates and Tigris Rivers because of the fertile land, hence the name 'fertile cresant.
The ancient region between the Tigris and Euphrates Rivers (now in present-day Iraq). It comes from the Greek words meaning "between the rivers."
I believe the first Ancient civilization was ancient Mesopotamia. It was located Between the Tigris and Euphrates rivers.