Local livelihoods were also affected by such parallel developments as the imposition of Hut Tax, the outbreak of 1899-1902 South African War, and the completion of the Mafikeng to Bulawayo railroad. A significant long-term outcome of all of these tribulations and developments was a sharp expansion in the flow of migrant labour out of the Protectorate.
While the absence of comprehensive data make it impossible to fully quantify the extent of this migration before the 1940s, a variety of sources indicates that by 1910 most of Botswana had already become a peripheral, increasingly underdeveloped labour reserve within the southern African macro-economy.