Train In The City

9. Trade and import of raw materials.
10. Specialist craftsmen from outside the kin-group.
This categorisation is descriptive, and it is used as a general touchstone when considering ancient cities, although not all have each of its characteristics.
One characteristic that can be used to distinguish a small city from a large town is organized government. A town accomplishes common goals through informal agreements between neighbors or the leadership of a chief. A city has professional administrators, regulations, and some form of taxation (food and other necessities or means to trade for them) to feed the government workers. The governments may be based on heredity, religion, military power, work projects (such as canal building), food distribution, land ownership, agriculture, commerce, manufacturing, finance, or a combination of those. Societies that live in cities are often called civilizations.