Notice that almost all of the chaos is confined to former French colonies? That is rather telling.
Egypt, Sudan, Nigeria, Uganda, Kenya, Tanzania and Somalia.
Egypt, Uganda, and Tanzania all seem to be in at least 95% control of their land. The others are the outliers. The former French colonies are in complete anarchy, due to the absolutely dreadful administration of the French.
Bullsh**t the French colonies lack control over Saharan desert territories, CAR is the only non-Saharan former French colony which lack control over its territory. The reason the former British colonies keep better control over their territory is the fact that UK controlled little territory in Sahara, which is trouble neighbourhood for several reason.
A funny fact if we look at population of the former French and British colonies, far more former British subjects on the map live without official state control than former French subjects.