How did South Africa gain control of South West Africa during World War I?

During World War I, South African forces gained control of South West Africa by invading and capturing the territory between 1914 and 1915. The German defense forces, significantly outnumbered by the South African troops, were ultimately forced to capitulate on July 9, 1915.123

Following the war, the League of Nations formalized this control by awarding a Class C mandate to the crown of Great Britain, to be exercised by the authorities of the Union of South Africa. This mandate was intended to be a sacred trust, though in practice, it was utilized by South African authorities to justify the settlement of Afrikaner populations, the economic integration of the territory into South Africa, and the systematic denial of rights to the local Black and Coloured populations. South West Africa remained under South African administration until it achieved independence as Namibia in 1990.123