Africa has seen slavery and all sorts of terrorism and persecutions in the colonial time, Apartheid days, and has also suffered deadly diseases, such as Aids and the deadly Ebola. So why is Africa having the lowest suicide rate as compared to Asia, the US, and Europe?
Actually, I believe our traditional and cultural values passed onto us during childhood taught us to be psychologically prepared for the worst scenarios that life can throw at us. 
African are the original inhabitants of the earth.
You are right I think the reason may be linked to our cultural values…
Sure