Not sure what your source is? Some of this seems to make sense (Rwanda and DRC) but others seem a bit fanciful. South Africa and Angola for example have not been foes since the end of apartheid. Please cite a source.
I got this off a YouTube video, and I made this when I had no clue about hardly any world events. I'm pretty sure that South Africa and Angola were only put as enemies because there was no other enemy to put.