•unemployment—industrialization
•soil depletion—abundant resources
•political persecution—personal liberties

the items above are examples of

unsustainable development

overpopulation

push-pull factors

urban form

The items above are examples of : 
Push - Pull Factors.
Push factors are the factors that drove away people to get outside a specific areas (usually negative)
Pull factors refer to the characteristic of an area that attract the migration.

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.