Official language to the government in their native languages. In countries that do not formally designate an official language, a "de facto" national language usually evolves. English is the most common official language, with recognized status in 51 countries. Arabic, French, and Spanish are also widely recognized. An official language that is also an indigenous language is called "endoglossic", one that is not indigenous is "exoglossic". An instance is Nigeria which has three endoglossic official languages. By this the country aims to protect the indigenous languages although at the same time recognising the English language as its lingua franca. Around 500 BC,
Kaonde language of people who are identified by a common language known as kiiKaonde. This group of people, like many others in Zambia, was originally part of the Luba Kingdom. They migrated south to area surrounding a stream called Kaonde in river Congo basin. From there, the people migrated into what is now Northwestern Zambia. This group of people called their language kiiKaonde. Speakers of other Bantu languages use the prefix "chi" other than "kii" to refer to this language. Thus non-Kaondes sometimes call the language Kikaonde. Like other Bantu languages, Kaonde nouns are grouped into several semantic classes, ranging from those