Pacific region where nice Maoris scattered (10)
I believe the answer is:
micronesia
'pacific region' is the definition.
(I've seen this before)
'nice maoris scattered' is the wordplay.
'scattered' is an anagram indicator.
'nice'+'maoris'='nicemaoris'
'nicemaoris' anagrammed gives 'MICRONESIA'.
'where' acts as a link.
(Other definitions for micronesia that I've seen before include "part of Pacific" , "Pacific region" , "Group of Pacific islands" , "Pacific lands" , "somewhere in Pacific" .)