I just watched The Lost City of Z and it made me realize that every rendition of Natives I've ever seen showed them with no facial hair or chest hair.
Is this just something that's happened in tv and film, or were Natives unable to grow the hair, or did they have removal processes?
This thread has some information bearing on the facial hair question. I cannot help with the questions regarding chest/back hair. Please see the summary provided by /u/yodatsracist. Bottom line is that many natives could grow beards, that some did, some were very sparse and, many plucked/trimmed facial hair as a cultural practice.