The wealthy can borrow money to finance their investment needs because bankers trust them. Those who are less well off, and who need loans the most, do not have this access and must call upon the solidarity of their family and community to finance their investments. The same logic can be used at the country level. High income countries borrow, while many poor African countries have a limited access to international capital markets. In recent years, only one fourth of sub-Saharan African countries were able to issue international bonds—and do not have any other alternative but to solicit international aid.