Allowance that was general in the US (5)
I believe the answer is:
grant
This clue could be a double definition.
'allowance' is the first definition.
(both can mean money given to someone)
'general in the us' is the second definition.
'Grant' can be an answer for 'general' (Grant is an example). I am not certain of the 'in the us' bit.
'that was' is the link.
Can you help me to learn more?
(Other definitions for grant that I've seen before include "US president" , "yield" , "cash received" , "Agree to - bursary" , "Allow (something)" .)