Romansh language the most comprehensive collection of Romansh words, which can also be used in the idioms with the necessary phonetic shifts. The signatories of "Pro Rumantsch" stress that Romansh needs both the idioms and Rumantsch Grischun if it is to improve its chances in today's communication society. In Switzerland, official language use is governed by the "territorial principle": Cantonal law determines which of the four national languages enjoys official status in which part of the territory. Only the federal administration is officially quadrilingual. Romansh is an official language at the federal level, one of the three official languages of the Canton
Romansh language since it gave the Romansh an advantage when learning other Romance languages. In 1807, for example, the priest Mattli Conrad wrote an article listing the advantages and disadvantages of Romansh: In response however, the editor of the newspaper added that: According to the testimony of experienced and vigilant language teachers, while the one who is born Romansh can easily learn to understand these languages and make himself understood in them, he has great difficulties in learning them properly, since precisely because of the similarity, he mixes them so easily with his own bastardized language. [...] in any case, the conveniences