Primary forms of work folks living in the Hinterlands

listen to the interview with Phil Neel and read the PDF files before the writing.
Interview link:
http://static1.squarespace.com/static/53d3ee86e4b076e5e3fc46e3/t/5cae04be1905f4b5ea671d23/155490844
write as much as you like, but no less than half a page, and no more than 1.5 pages (12pt, Times New Roman
Question:
What are the primary forms of work folks living in the Hinterlands do, and why does the author have such host