Culture is the answer! Hope this helps!:))
The adversarial means that it is somewhat having to be
involved into something, it may be a group, a thing or to an individual, it
could also meant of having to cause conflict or to be engage in to certain things
that will arise as conflict.
Answer:
New Guinea is administratively divided into two parts: its western half comprises the Indonesian propinsi (or provinsi; provinces) of Papua and West Papua (collectively, formerly called Irian Jaya); and its eastern half comprises the major part of Papua New Guinea, an independent country since 1975.
