Country, for example, brings up the matter of consumption (5)
I believe the answer is:
usage
'consumption' is the definition.
(thesaurus)
'country for example brings up' is the wordplay.
'country' becomes 'usa' (U.S.A. is an example**).
'for example' becomes 'eg' ('e.g.' can be a synonym of 'for example').
'brings up' says the letters should be written in reverse (I've seen 'brought up' mean this (down clues only)).
'eg' back-to-front is 'ge'.
'usa'+'ge'='USAGE'
'the matter of' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for usage that I've seen before include "Convention" , "linguistic custom?" , "Way of treating" , "Particular meaning of a word" , "Customary way in which language is spoken or written" .)