Answer: Diamond, Gold and Cocoa among other products.
Explanation: The economies of Ghana, Sierra Leone, Côte d'Ivoire and other nations depend heavily on the export of minerals such as diamonds in the case of Sierra Leone and agricultural products such as cocoa, as is the case of Ghana and Côte d'Ivoire. Gold is another mineral that is mainly exported in Ghana. It could be said that the basis of the economy of these three countries is based on the extraction and marketing of minerals, as well as the production of cocoa and coffee among other products.