My guess is that it's old tribal alliances vs what is best for a country. ... which is not special to Africa particularly. But Western Europe went through thi

My guess is that it's old tribal alliances vs what is best for a country. ... which is not special to Africa particularly. But Western Europe went through this centuries ago. It is said that the past is another country. The reverse is true. There are other factors like fewer geographical separations. Lesotho and Namibia are more stable now because they are enclosed by mountains and separated from others by desert respectively. Imagine if there was no water separating England and the European continent. There probably would not be an England. Or rather, no UK.