In France we show common sense (4)
I believe the answer is:
nous
This clue is a double definition.
'in france we' is the first definition.
('we' in French)
'common sense' is the second definition.
(nous is a kind of common sense)
'show' is the link.
(Other definitions for nous that I've seen before include "FT in Paris, say" , "we found in Sorbonne, for example" , "Common sense, rhymes with house" , "Sound practical judgement" , "Abroad we" .)