Incorporated article from South American (5)
I believe the answer is:
incan
'south american' is the definition.
(I've seen this before)
'incorporated article' is the wordplay.
'incorporated' becomes 'inc'.
'article' becomes 'an' (English indefinite article).
'inc'+'an'='INCAN'
'from' is the link.
(Other definitions for incan that I've seen before include "like former S American civilisation" , "Of a native Peruvian" , "Pachacuti for example" , "Of an ancient Andean culture" , "associated with ancient culture" .)