isiZulu

Zulu, also known by its endonym isiZulu, is a Southern Bantu language of the Nguni branch spoken in, and indigenous to, Southern Africa with about 13.56 million native speakers, who primarily inhabit the province of KwaZulu-Natal in South Africa. Zulu is the most widely spoken home language in South Africa, and it is understood by over 50% of its population. It became one of South Africa's 12 official languages in 1994.