I want to know the answer to the following question:
Indigenous peoples of the Amazonas preserved what until the recent past?
All the background I'm provided with is that "Peoples that preserved paleolithic hunting-gathering until the recent past include some indigenous peoples of the Amazonas (Aché), some Central and Southern African (San people), some peoples of New Guinea (Fayu), the Mlabri of Thailand and Laos, the Vedda people of Sri Lanka, and a handful of uncontacted peoples.". Is that enough to answer the question?
Answer: yes