Romansh language published in 1703, though either the Catholic variety of Sursilvan or Putèr was more commonly used there until the 20th century. In the 16th century, the language border between Romansh and German largely stabilized, and it remained almost unchanged until the late 19th century. During this period, only isolated areas became German-speaking, mainly a few villages around Thusis and the village of Samnaun. In the case of Samnaun, the inhabitants adopted the Bavarian dialect of neighboring Tyrol, making Samnaun the only municipality of Switzerland where a Bavarian dialect is spoken. The Vinschgau in South Tyrol was still Romansh-speaking in the
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