I think they would be European
I would think that what with the influx of refugees and widespread immigration in modern times that it would be very unlikely to find one language that is not spoken in mainland Europe. I would suggest that perhaps only the language of a primitive tribe in Borneo or Papua New Guinea that has never mixed with civilization that language may not be spoken in mainland Europe, ie Malayic languages plus the languages of the British Columbia, Canada First Nations probably are not spoken there also.
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The geography of the region is mainly made up by four features: the Mojave, Sonoran, and Chihuahuan Deserts, and the Colorado Plateau; although there are other geographical features as well, such as a portion of the Great Basin Desert.
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Ooooo thats pretty!
did you edit that pic urself??