Amrywiaeth ethnoieithyddol dan fygwth yn Laos:

Laos’ rich and complex linguistic mosaic is such that some minorities, so tiny that they occupy no more than a single valley, use a dialect dissimilar enough from their neighbors for it to be considered a distinctly separate language. Laos is a multiethnic society with an extraordinary range of cultural and social plurality within its porous borders. Its people have, for the sake of convenience and to imply a degree of largely absent national unity, been classified into four primary ethno-linguistic groups.