Standard behaviour and yet initially from Northern France (8)
I believe the answer is:
normandy
'northern france' is the definition.
'normandy' can be an answer for 'france' (I've seen this before). I am not certain of the 'northern' bit.
'standard behaviour and yet initially' is the wordplay.
'standard behaviour' becomes 'norm' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'initially' says to take the initial letters.
The first letter of 'yet' is 'y'.
'norm'+'and'+'y'='NORMANDY'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for normandy that I've seen before include "place of William" , "Region of NW France bordering on English Channel" , "Region of northern France" , "Province of northwestern France" , "conqueror's home region" .)