What was the effect of early civilizations developing a division of labor

Civilizations had social classes.

Explanation:

The moment of transition from the nomadic state to a sedentary form of life led to the need to develop the division of labor among primitive men. The division of labor generated the first primitive societies and then led to the creation of social classes.

From the division of labor arose tribes, groupings of individuals bound by kinship ties. But the stay in space of primitive societies has limited access to food sources, basically hunting, fishing, and gathering wild fruits and roots. The need to expand food stocks has led to agricultural activity and another step has been reached with the conversion of grazing and agriculture into major livelihood sources. The first landowners arose, dominating the tribal economy which is one of the first social classes.

sumerians were polytheistic, meaning they believed in many different gods. so, the best answer is c.