Zambia the plateau in a curve north east to south west, extended west into the heart of the plateau by the deep valley of the Lunsemfwa River. Hills and mountains are found by the side of some sections of the valley, notably in its north-east the Nyika Plateau () on the Malawi border, which extend into Zambia as the Mafinga Hills, containing the country's highest point, Mafinga Central (). The Muchinga Mountains, the watershed between the Zambezi and Congo drainage basins, run parallel to the deep valley of the Luangwa River and form a sharp backdrop to its northern edge, although
British South Africa Company Zimbabwe, and North-Eastern Rhodesia (now part of Zambia) and Portuguese Mozambique. It divided Manica, granting the western portion to the British South Africa Company. It also fixed the boundaries between the BSAC-administered territory of North-Western Rhodesia (now in Zambia), and Portuguese Angola. The northern border of the British territories was agreed as part of an Anglo-German Convention in 1890. The border between the British Central Africa Protectorate and the territory of the British South Africa Company in what is today Zambia was fixed in 1891 at the drainage divide between Lake Malawi and the Luangwa River. The terms of the