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,
Miracle of Chile of a double standard, because I had spent time in Yugoslavia, which was a communist country. I later gave a series of lectures in China. When I came back from communist China, I wrote a letter to the Stanford Daily newspaper in which I said, 'It's curious. I gave exactly the same lectures in China that I gave in Chile. I have had many demonstrations against me for what I said in Chile. Nobody has made any objections to what I said in China. How come?'" He noted that his visit was unrelated to the political side of the regime