Make a case that development economics might be merely a combination of all the other subfields of economics, only applied to low-income countries.

Case explained below

Explanation:

Development economics is a branch of economics which deals with economic aspects of the development process in low income countries. Its focus is not only on methods of promoting economic development, economic growth and structural change but also on improving the potential for the mass of the population, either through health, education and workplace conditions, whether through public or private channels.

Development economics must encompass the study of institutional, political, and social as well as economic mechanisms for modernizing an economy while eliminating absolute poverty and transforming states of mind as well as physical condition.