Ancient China's first civilizations formed near the Huang He, also known as the Yellow River. Just like other river valley civilizations, the Huang He would flood and leave behind large amounts of yellowish fertile soil called loess. The flooding of the Yellow River was both a good and bad thing for the Chinese.
The answer for this question is: <span>Pastoral societies often raided agricultural villages for livestock
Pastoral societies are a form of nomadic society that raises livestock as their primary ways of life.
These societies tend to rely only on nature to find foods for their livestocks, and their livestock often dies during a certain period of the season. So, the society often stole from agricultural civilizations that tend to have a stable amount of foods.</span>
I'll answer this base on a general point of view. Socioeconomic adversity is synonymous with inequality therefore in all underdeveloped countries is experienced by the lack of resources to access different services such as health, education etc which translates into a reduction in the quality of life which can mean a lower expectation of life in some regions.