It is most certainly likely that the person who chewed the food for the person who lost his teeth was of the same tribe as the latter. We thrive as humans in a tribe, whose members look out for each other. The smaller the tribe, the more tightly we look out for each other. For bigger groups, mere tribalism won't work - that's when democracy shines. But then you always have the looming threat of your democracy descending into tribalism with political factions.

Africa is a mishmash of extremely poorly drawn borders, decided on the whims of arrogant aristocrats in hall rooms in Europe, without paying any attention to the inherent tribal cultures that were present in Africa - and the DRC is the most evident example of this. That's why you have a tiny country like Rwanda being able to support a significant rebellion in Eastern DRC, why DRC has more than 700 communities, with no community making even 10% of the population, why the government is unable to create any form of integration within the country. Like on what basis can the government unite the people together? "We all suffered under Leopold II of Belgium together"??