Country made great in an upheaval (9)
I believe the answer is:
argentina
'country' is the definition.
(I know that Argentina is a South American country)
'great in an upheaval' is the wordplay.
'upheaval' indicates anagramming the letters.
'great'+'in'+'an'='greatinan'
'greatinan' is an anagram of 'ARGENTINA'.
'made' is the link.
(Other definitions for argentina that I've seen before include "South American country" , "Silver country" , "state" , "Republic" , "FIFA World Cup winners in 1978 and 1986" .)