Who lives in the Amazon?
That's a good guess, but it's not right.
You could use the word "aborigine" to describe the
indigenous people of the Amazon, since it has a similar meaning as "indigenous."
Both refer to the original inhabitants of an area or country. But "Aborigine"
usually refers specifically to the original inhabitants of Australia. Using
the same word for other native peoples would be technically correct but
a little confusing.
Besides, the question was "what other people live
in the Amazon now, besides the indigenous peoples?" Why don't you try again?