Not a single firm invested in huge capital returns in the Halifax region (4,6)
I believe the answer is:
nova scotia
'region' is the definition.
(I know that Nova Scotia is Canadian province)
'not a single firm invested in huge capital returns in the halifax' is the wordplay.
I cannot really see how this works, but
'not' could be 'no' (negative) and 'no' is found within the answer.
'a' is within the answer.
'single' could be 'i' (one) and 'i' is located in the answer.
'firm' could be 'co' (abbreviation for company) and 'co' is found in the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for nova scotia that I've seen before include "Atlantic region" , "Canadian province" , "Canadian peninsula" .)