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
Romansh language power of the central government of Grisons, which had always used German as its administrative language. In addition, many Romansh-speakers migrated to the larger cities, which were German-speaking, while speakers of German settled in Romansh villages. Moreover, economic changes meant that the Romansh-speaking villages, which had mostly been self-sufficient, engaged in more frequent commerce with German-speaking regions. Also, improvements in the infrastructure made travel and contact with other regions much easier than it had been. Finally, the rise of tourism made knowledge of German an economic necessity in many areas, while the agricultural sector, which had been a traditional domain