It ran better during Imperialism. Then great countries like Britain and France gave the people their countries. Soviet Union did so about 75 years later. Result, All the monkey tribes try to kill each other. Some people are ready to govern and some are not. Look at Iraq. In 7 years not one leader has stood and gave people confidence.
True, just look at Africa - not one really stable black African country - even South Africa is a shit-hole.