They are pregnant girlfriends and not wives!
I know a rich caucasian man that is legally married and also with a girlfriend that has bore him two kids, the legally married wife is aware of the girlfriend.
The man had seven children in total. He is very rich and wealthy too.
This is not only synonymous to Africa, it happens in other Western countries too. We do not know it all. A lot is happening around the world.
Even in the US, men can legally marry two or three wives. In Utah, to be precise