History and Culture of Swaziland. The Nguni clans, which originated in East Africa in the fifteenth century, moved into southern Mozambique and then into present-day Swaziland; the term abakwaNgwane ("Ngwane's people") is still used as an alternative to emaSwati . Sobhuza I ruled during a period of chaos, resulting from the expansion of the Zulu state under Shaka. Swaziland Information and Travel Guide. Vacation package Book. Under Sobhuza's leadership, the Nguni and Sotho peoples as well as remnant San groups were integrated into the Swazi nation. "Swazi" eventually was applied to all the peoples who gave allegiance to the Ngwenyama. National Identity: In the late 1830s, initial contact occurred among the Swazi, the Boers, and the British. A substantial portion of Swazi territory was ceded to the Transvaal Boers, the first of many concessions to European interests. The Pretoria Convention for the Settlement of the Transvaal in 1881 recognized the independence of Swaziland and defined its boundaries. The Ngwenyama was not a signatory, and the Swazi claim that their territory extends in all directions from the present state. More than a million ethnic Swazi reside in South Africa. Britain claimed authority over Swaziland in 1903, and independence was achieved in 1968.