Romansh language 17th century, after which it became entirely German-speaking because of the Counter-Reformation denunciation of Romansh as a "Protestant language". When Grisons became part of Switzerland in 1803, it had a population of roughly 73,000, of whom around 36,600 were Romansh speakers—many of them monolingual—living mostly within the Romansh-speaking valleys. The language border with German, which had mostly been stable since the 16th century, now began moving again as more and more villages shifted to German. One cause was the admission of Grisons as a Swiss canton, which brought Romansh-speakers into more frequent contact with German-speakers. Another factor was the increased
Jauer dialect (Romansh) 2007, a collection of short stories written in Jauer ("Dschon Uein id atras istorias grischunas") was published In official use and as the language of school, Vallader has traditionally been used in the Val Müstair. In 2007, the valley was one of the first municipalities of the canton to introduce the pan-regional Romansh variety Rumantsch Grischun as the language of schooling and official use. In 2012 however, a municipal assembly voted to return to the use of Vallader in schools. As with other Romansh speakers, virtually all speakers of Jauer with the exception of children below school-age are also proficient