An unimportant quarrel about resistance to first aid in ancient city (6)
I believe the answer is:
sparta
'ancient city' is the definition.
(I've seen this before)
'an unimportant quarrel about resistance to first aid' is the wordplay.
'an unimportant quarrel' becomes 'spat' (spatting is a kind of quarrelling. I am not sure about the 'unimportant' bit.**).
'about' indicates putting letters inside.
'resistance' becomes 'r' (abbreviation).
'to first' suggests taking the first letters.
The initial letter of 'aid' is 'a'.
'spat' placed around 'r' is 'spart'.
'spart'+'a'='SPARTA'
'in' is the link.
Can you help me to learn more?
(Other definitions for sparta that I've seen before include "in ancient Greece" , "place of austerity" , "Ancient kingdom renowned for asceticism" , "Where to find ancient Greek" , "Ancient Greek city-state" .)