https://www.researchgate.net/publication/310799440_Mortality_among_European_settlers_in_pre-colonial_West_Africa_The_White_Man's_Grave_revisited https://www.res

https://www.researchgate.net/publication/310799440_Mortality_among_European_settlers_in_pre-colonial_West_Africa_The_White_Man's_Grave_revisited https://www.researchgate.net/publication/310799440_Mortality... Somewhere between 10% to 30% of Europeans that moved to West Africa died each year. To put that in context the black death on average killed between 30% to 60% of the population _once a generation_.