The answer is "social and environmental issues". In a developing country, populations are generally fast growing, but have a lower standard of living, thus a lower life expectancy. These areas are also sources of cheap labor for developed countries, so jobs are outsourced TO these countries, not from them. Finally, economic issues could be prevalent, but these societies usually have lots of jobs available. Hope this helps!
Bessemer's process for making steel changed the look of our world because it allowed workers to spilt up the work and produce more at a time than all working together.
