Yawalapití Language tribe living in the Amazon basin in Brazil, now has no more than 200 people. The first recorded mention of it in 1887. Then the village was like a small farm, and the locals did not have much food and water. Despite the fact that in the neighborhood of Yawalapití Language reside three tribal inhabitants of a settlement almost became extinct in 1954. Then their number was only 25 chelovek.
See also: In the Himalayas found tribes speaking an unknown language earlier. In 1962, in Tanzania, more than 1,000 people affected by the epidemic of laughter. Archaeologists have found a tablet with the ancient language of the MDM did not know.