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,
Chile groups, regardless of whether or not they maintained their culture, traditions and language, and 4.6 percent of the population (692,192 people) fitted that description of indigenous peoples in Chile. Of that number, 87.3% declared themselves Mapuche. Most of the indigenous population shows varying degrees of mixed ancestry. Chile is one of 22 countries to have signed and ratified the only binding international law concerning indigenous peoples, the Indigenous and Tribal Peoples Convention, 1989. It was adopted in 1989 as the International Labour Organization (ILO) Convention 169. Chile ratified it in 2008. A Chilean court decision in November 2009 considered to