Developing countries in Africa have been accumulating more debt due to the global financial crisis. The study looked at how much money these countries owe compared to how much they make, and found that many are at high risk of not being able to pay back their debts. Some countries like Chad, Eritrea, and Zimbabwe are in serious trouble. Even big countries like Nigeria and South Africa are facing moderate debt risks. Countries like Ghana, Ethiopia, and Kenya have already borrowed more than they should. The study suggests that these countries need to be careful with how they spend their money.