The document discusses several potential causes of the development gap between wealthy and poor nations:
1. Debt from large capital loans that poor countries have struggled to repay, making it difficult to escape poverty. However, debt is argued to be a symptom rather than a direct cause.
2. Corrupt governments that mismanage resources, as seen in countries like Kenya and Nigeria.
3. Exploitation by transnational corporations (TNCs) and colonial powers historically that prevented investments and used trade barriers to undermine economic development in poorer nations.
4. Subsidies in wealthy countries that negatively impact local production in poor countries.
5. Theories like core-periphery and economic man help