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,
Official language main teaching language is Hebrew, English is taught as a second language, and most students learn a third language, usually Arabic but not necessarily. Other public schools have Arabic as their main teaching language, and they teach Hebrew as a second language and English as a third one. There are also bilingual schools which aim to teach in both Hebrew and Arabic equally. Some languages other than Hebrew and Arabic, such as English, Russian, Amharic, Yiddish and Ladino enjoy a somewhat special status, but are not considered to be official languages. For instance, at least 5% of the broadcasting time