It's important to debunk the myths of Africa being this benighted continent civilized only when white people arrived. In fact, Africans had been creators of culture for thousands of years before. These were very intelligent, subtle and sophisticated people, with organized societies and great art.
You should never have to say hello or goodbye. Even at work sometimes, and I know this is very unpopular, is that if I'm going to work every single day, I don't think you should have to hug people hello every single day when you come to work. I saw you Monday!
God loves us all, wants us all to share his kingdom, has a role for us all.