In the context of early urbanization, highly productive agriculture and water transport can be considered necessary conditions. These factors provided the foundation for sustaining a growing population and facilitating trade and communication.
On the other hand, the division of labor, the use of seals, and the military power of kings can be seen as causes of early urbanization. The division of labor allowed for specialized occupations and the development of complex societies. The use of seals and the military power of kings helped establish social order and control over resources, which contributed to the growth of cities.
Regarding the lack of metal and stone, it is not directly a necessary condition or cause of early urbanization. However, it could have influenced the architectural and technological development of cities.
In terms of outcomes, the growth of cities can be seen as the result of these factors coming together. As cities grew, they became centers of economic, social, and political activity, leading to further urbanization and the development of more complex societies.
These interpretations are based on historical analysis and the understanding of how different factors interacted during early urbanization.