The document discusses the structural features and common characteristics of developing countries, categorizing them into eight broad aspects such as size, historical backgrounds, resource endowments, and political structures. It highlights how disparities in economic growth potential stem from these factors, alongside seven common characteristics like low living standards, low productivity, high population growth, and dependence on agriculture. Furthermore, it addresses challenges such as high unemployment rates and brain drain, emphasizing the impact of imperfect markets and international relations on development efforts.