Krio

Sierra Leone Krio is the lingua franca and the de facto national language spoken throughout the West African nation of Sierra Leone. Krio is spoken by 97% of Sierra Leone's population and unites the different ethnic groups in the country, especially in their trade and social interaction with each other. Krio is the primary language of communication among Sierra Leoneans at home and abroad. The language is native to the Sierra Leone Creole people or Krios, and is spoken as a second language by millions of other Sierra Leoneans belonging to the country's indigenous tribes. English is Sierra Leone's official language, while Krio, despite its common use throughout the country, has no official status. Wikipedia