The land transformed by Ali (5)
I believe the answer is:
libya
'the land' is the definition.
(Libya is an example)
'transformed by ali' is the wordplay.
'transformed' is an anagram indicator.
'by'+'ali'='byali'
'byali' with letters rearranged gives 'LIBYA'.
(Other definitions for libya that I've seen before include "North African republic" , "North African country" , "N African country" , "Country, capital Tripoli" , "North African nation" .)