Newly-developed African oil state (10)

I believe the answer is:

california

'state' is the definition.
(California is an example)

'newly-developed african oil' is the wordplay.
'newly developed' indicates an anagram.
'african'+'oil'='africanoil'
'africanoil' with letters rearranged gives 'CALIFORNIA'.

(Other definitions for california that I've seen before include "US state" , "The Golden State" .)

I've seen this clue in The Telegraph.

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