Romansh language the tertiary level, the University of Fribourg offers Bachelor- and Master programs for Romansh language and literature. The Romansh department there has been in existence since 1991. The University of Zürich also maintains a partial chair for Romansh language and literature together with the ETH Zürich since 1985. Whereas Romansh was spoken as far north as Lake Constance in the early Middle Ages, the language area of Romansh is today limited to parts of the Swiss canton of Grisons; the last areas outside the canton to speak Romansh, the Vinschgau in South Tyrol, became German-speaking in the 17th century. Inside
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,