Answer:
From a state of endangerment, many languages become extinct. When the speakers of a language are exterminated as what happened to Tasmanians in the 19th century, several languages suddenly died. Another reason for the extinction is the pressure exerted on a community to incorporate with a more powerful or larger group.
I'm not so good at science but I believe just from the Internet and common sense that it could be found in Hawaii, Yellowstone, Iceland, and (not completely sure for last one) but maybe Pompeii. I know the first 3 are most likely correct but I'm not completely sure about Pompeii. Just look it up, lol
South is downstream
Hope this helps
