University in country area yielding capital in Africa (6)
I believe the answer is:
'capital in africa' is the definition.
(capital of Angola)
'university in country area' is the wordplay.
'university' becomes 'u' (abbreviation for university).
'in' is an insertion indicator.
'country' becomes 'land' (synonyms).
'area' becomes 'a' (maths abbreviation).
'u' going into 'land' is 'luand'.
'yielding' is the link.
(Another definition for luanda that I've seen is " Capital of Angola; landau (anag.)".)