Final answer:
Occupation specialism is the term that describes the division of labor in every city's culture. In ancient cities like Mesopotamia, there were various specialized occupations, leading to social hierarchies. Assembly lines are a modern example of division of labor.
Step-by-step explanation:
The term that means division of labor is part of the culture of every city is occupation specialism. Division of labor refers to the specialization of tasks and roles within a society or organization. In every city, individuals have different occupations and responsibilities that contribute to the overall functioning of the community.
For example, in ancient cities like Mesopotamia, there were leather workers, potters, metalworkers, shopkeepers, soldiers, scribes, priests, and more. This division of labor created social hierarchies and allowed for a more complex and organized society. An modern-day example of division of labor can be found in assembly lines, where workers are assigned specific tasks to increase efficiency and productivity.