Central African girl living in Niger (7)
I believe the answer is:
rwandan
'central african' is the definition.
'girl living in niger' is the wordplay.
'girl' becomes 'wanda' (**).
'living in' indicates putting letters inside.
'niger' becomes 'rn' (international vehicle registration code).
'wanda' inserted within 'rn' is 'RWANDAN'.
(Other definitions for rwandan that I've seen before include "African chap" , "African native" , "Eg, a native of Kigali" , "Kigali native, perhaps" , "From a central African country" .)