The Sumerians Began to Construct an Urban Civilization in Mesopotamia

The Sumerians began to construct an urban civilization in Mesopotamia not long after

A) 10,000 B.C.E.
B) 7000 B.C.E.
C) 3500 B.C.E.
D) 1350 B.C.E.
E) 350 B.C.E.