In 2007, the Mo Ibrahim foundation published an index ranking the performance of the 48 countries in sub-Saharan Africa. The countries are graded on factors such as security, levels of corruption, and respect for human rights. Mauritius, the Seychelles, and Botswana were ranked first, second, and third, respectively, while Chad, the Democratic Republic of the Congo, and Somalia held the three lowest places. Ibrahim's home country, Sudan, was placed fourth lowest. __