Development economics is a subfield of economics that focuses on the factors and policies that contribute to economic growth and development in low- and middle-income countries. It considers the social, political, and environmental conditions that affect economic development, as well as the impact of policies related to trade, investment, infrastructure, education, and health. Development economists aim to understand the root causes of poverty and inequality, and to identify policies that can promote sustainable and inclusive economic growth. It requires specialized skills such as statistical analysis, modeling, econometrics, and an understanding of both micro and macroeconomic factors that impact development.