Northern Rhodesia the British South Africa Company administered territory of North-Western Rhodesia (now in Zambia), and Portuguese Angola although its boundary with Angola was not marked-out on the ground until later. The northern border of the British territory in North-Eastern Rhodesia and the British Central Africa Protectorate was agreed as part of an Anglo-German Convention in 1890, which also fixed the very short boundary between North-Western Rhodesia and German South-West Africa, now Namibia. The boundary between the Congo Free State and British territory was fixed by a treaty in 1894, although there were some minor adjustments up to the 1930s. Boundaries with
Northern Rhodesia BSAC claimed to own mineral rights over the whole of Northern Rhodesia under concessions granted between 1890 and 1910 by Lewanika covering a poorly defined area of North-Western Rhodesia or negotiated by Joseph Thomson and Alfred Sharpe in 1890 and 1891 with local chiefs in a disputed area of North-Eastern Rhodesia. This claim was accepted by the British Government. After the Charter ended, BSAC joined a group of nine South African and British companies which financed the development of Nchanga Mines, to prevent them falling under US control. However, its main concern was to receive royalties. However significant they were,