Preserve commercial area in country since 1867
I believe the answer is:
canada
'country since 1867' is the definition.
I can't tell whether this defines the answer.
'preserve commercial area' is the wordplay.
'preserve' becomes 'can' (canning is a kind of preserving).
'commercial' becomes 'ad'.
'area' becomes 'a' (maths abbreviation).
'can'+'ad'+'a'='CANADA'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for canada that I've seen before include "Its flag includes the maple leaf" , "Country to north of USA" , "- Balsam; - goose" , "Nation in northern North America" , "World's second-largest country by area" .)