Very interesting! I visited Sudan two years ago. I didn't realize in advance that this was such a common thing. It looks like about about 20% of women are in polygynous relationship there. I never met anybody directly with multiple wives, but some people talked to us about it. I was surprised that even some young modern people seem to be okay with it. They may dress in modern clothes and not keep many traditions, but polygamy doesn't seem strange for them. That was new for me.