Mogul's territory includes province (6)
I believe the answer is:
ulster
'province' is the definition.
(I've seen this before)
'mogul's territory includes' is the wordplay.
'includes' indicates the answer is hidden within the clue.
'ULSTER' is hidden in the letters of 'moguls territory'.
(Other definitions for ulster that I've seen before include "old province" , "Region of Ireland" , "former province of Ireland" , "Odd result for the North" , "Northern Ireland (loosely)" .)