"I have sometimes seen, in the morning sun, the smoke of a thousand villages, where no missionary has ever been."In 1840, David Livingstone was haunted by these words from Robert Moffat. Within a few months, Livingstone sailed to join Moffat on the pioneer field in southern Africa.Initially, his mission stations were among the Bakwena clan of the Kalahari Basin. Afterward, realizing just how vast and diverse the uncharted territories of subsaharan...