Romansh language the results of the Swiss censuses. The decline in percentages is only partially due to the Germanization of Romansh areas, since the Romansh-speaking valleys always had a lower overall population growth than other parts of the canton. Starting in the mid-19th century however, a revival movement began, often called the "Rhaeto-Romansh renaissance". This movement involved an increased cultural activity, as well as the foundation of several organizations dedicated to protecting the Romansh language. In 1863, the first of several attempts was made to found an association for all Romansh regions, which eventually led to the foundation of the "Società Retorumantscha"
Romansh language Sursilvan and Engadinese as the languages of ballots, a referendum was launched to amend the relevant article. In the referendum, which took place on June 10, 2001, 65% voted in favor of naming Rumantsch Grischun the only official Romansh variety of the Canton. Opponents of Rumantsch Grischun such as Renata Coray and Matthias Grünert argue, however, that if only those municipalities with at least 30% Romansh speakers were considered, the referendum would have been rejected by 51%, with an even larger margin if only those with at least 50% Romansh speakers were considered. They thus interpret the results as the