Romansh

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Romansh  is one of Switzerland’s four national languages.

However only about  0.5% percent of Swiss can speak Romansh.

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The Swiss believe that their Romansh came from the Romans when they conquered Rhaetia,  (Graubünden) in 15BC .

Romansh would be a mixture of  Vulgar Latin and Rhaetian, which was spoken by  the natives.