What allowed specialization and division of labor in mesopotamia

Reliable and plentiful food production allowed some farmers to quit farming

Explanation:

Mesopotamia is considered one of the cradles of civilization, since it was in Lower Mesopotamia where the first civilizations arose around the 6th millennium BC The first cities were the culminating result of a sedentarization of the population and of an agricultural revolution, which originated during the Neolithic Revolution. Man ceased to be a collector who depended on the hunting and natural resources offered, a new form of domination of the environment is one of the possible causes of the urban outbreak in Mesopotamia.

The economy of Mesopotamia was based on irrigation agriculture. They grew wheat, barley, flax, sesame, fruit trees, roots and vegetables. This production was so abundant that it allowed some farmers to stop their rural activities and try to succeed in other sectors of work.

porter is writing economic history because he is focusing on the cost of developing vaccines.

silk

indigo  

rice

all the other answers are wrong