Basotho
The Kololo were a Sotho people who used to live in what is now the Free State province of South Africa. The Kololo were forced to flee from Shaka Zulu's Mfecane during the 1830s. Using tactics they had copied from the Zulu armies, the Kololo conquered the Luyana on the Zambezi floodplains and imposed their rule and language. However, by 1864 the indigenous population revolted and overthrew the Kololo. By that time, the Luyana language had been largely forgotten; the new hybrid language is called Lozi or Silozi and is closer to Sesotho than to any other neighbouring languages in Zambia.