The value of the industrial mission depends on the nature of the tribes.
Even the less advanced, more primitive tribes may benefit, if not only
mechanical and artisan work, such as the carpenter's or blacksmith's
craft, but also the simpler techniques of agriculture are taught. The
sinking of wells, the system of irrigation, the introduction and planting of
useful trees, the use of domestic animals for agricultural purposes - all
of these will render native land more productive. How does this author
justify European imperialism in Africa?