Confused reign in Africa (5)

I believe the answer is:

niger

'in africa' is the definition.
('Niger' is part of 'africa')

'confused reign' is the wordplay.
'confused' indicates anagramming the letters.
'reign' is an anagram of 'NIGER'.

(Other definitions for niger that I've seen before include "one flowing through Mali" , "West African river and country" , "Landlocked W African republic" , "The black" , "African country dominated by the Sahara, until 1969 a French colony" .)

I've seen this clue in the Evening Standard.

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