Swahili language
The exact number of Swahili speakers, be it native or second-language speakers, is unknown and a matter of debate. Various estimates have been put forward and they vary widely, from 50 million to over 100 million. Swahili serves as a national language of four nations: Tanzania, Kenya, Uganda, and the DRC. Shikomor, the official language in Comoros and also spoken in Mayotte (), is related to Swahili. Swahili is also one of the working languages of the African Union and officially recognised as a lingua franca of the East African Community. South Africa legalized the teaching of Swahili in South African schools as an optional subject beginning in 2020.
Swazi people
The Swazi or Swati () are a Bantu ethnic group of Southern Africa, predominantly inhabiting modern Eswatini and South Africa's Mpumalanga province. The Swati are part of the Nguni family that can be archaeologically traced in East Africa where the same tradition, beliefs and cultural practices are found. The Swati share a unique experience, culture and Royal lineage. This lineage is exclusive to the inhabitants of Swaziland, even though there have been more Swazi people that have moved to South Africa and the United Kingdom in the 20th century. The original inhabitants of Swaziland no longer reside in Swaziland as a majority population while some remain in the land. The Swazi people and the Kingdom of Eswatini today are named after Mswati II, who became king in 1839 after the death of his father King Sobhuza who strategically defeated the British who occupied Swaziland. The Kingdom of Swaziland was a region occupied by the San people of Southern Africa and the current Swazis came in from North Eastern regions through to Mozambique and eventually Swaziland in the 15th century. Mixtures with the San people and other Nguni tribes occurred. Their royal lineage can be traced to a chief named Dlamini I; this is still the royal clan name. About three-quarters of the clan groups are Nguni; the remainder are Sotho , Tsonga, others North East African and San descendants. These groups have intermarried freely. There are slight differences among Swazis as a nation with varying features and skin tones yet Swazi identity extends to all those with allegiance to the twin monarchs Ingwenyama "the Lion" (the king) and Indlovukati "the She-Elephant" (the queen mother). The dominant Swati language and culture are factors that unify Swazis as a nation since there is no other language spoken except for English.