Is it possible for Lesser Developed Countries such as countries in Sub-saharan Africa to become Developed Countries?

Lesser developed countries such as those in Africa are caught in an unending cycle of exploitation and third-world debt that makes it difficult to ascend the "ladder of development." Countries are exploited for natural resources by other, more powerful countries and multinational corporations. The exploiters do not return their monies to the country, so it is left to wallow in its losses. They attempt to break out of this cycle by taking in big loans useing those loans to industrialize and develop. But as they attempt to develop, the exploiters come back to take more from the country. Is it possible for countries to break out of this cycle?