Extinct languages are ones which no longer have any speakers. The languages included in this map are one which have presumably gone extinct since the 1950s.
It is estimated that, if nothing is done, half of 6000 plus languages spoken today will disappear by the end of this century. With the disappearance of unwritten and undocumented languages, humanity would lose not only a cultural wealth but also important ancestral knowledge embedded, in particular, in indigenous languages.
While language extinction is a global phenomenon, the largest concentration of recently extinct languages in the world is on the West Coast of the United States – California (22 extinct languages), Oregon (9), and Washington (7).