Southern Rhodesia was a landlocked self-governing British Crown colony in southern Africa, established in 1923 and consisting of British South Africa Company (BSAC) territories lying south of the Zambezi River. The region was informally known as south Zambesia until annexed by Britain at the behest of Cecil Rhodes's British South Africa Company, for whom the colony was named. The bounding territories were Bechuanaland (Botswana), Northern Rhodesia (Zambia), Portuguese Mozambique (Mozambique), and the Transvaal Republic.

The British South Africa Company was chartered in 1889 following the amalgamation of Cecil Rhodes' Central Search Association and the London-based Exploring Company Ltd, which had originally competed to capitalize on the expected mineral wealth of Mashonaland but united because of common economic interests and to secure British government backing. The company received a Royal Charter modelled on that of the British East India Company. Its first directors included The 2nd Duke of Abercorn, Rhodes himself, and the South African financier Alfred Beit. Rhodes hoped BSAC would promote colonisation and economic exploitation across much of south-central Africa, as part of the "Scramble for Africa". However, his main focus was south of the Zambezi, in Mashonaland and the coastal areas to its east, from which he believed the Portuguese could be removed by payment or force, and in the Transvaal, which he hoped would return to British control.