African country elevated about introduction of state religion (5)
I believe the answer is:
Here is my best explanation:
'religion' is the definition.
(Islam is an example)
'african country elevated about introduction of state' is the subsidiary indication.
'african country' becomes 'mali' (Mali is an example).
'elevated' says the letters should be written backwards.
'about' is an insertion indicator.
'introduction of' suggests taking the first letters.
The first letter of 'state' is 's'.
'mali' written backwards gives 'ilam'.
'ilam' enclosing 's' is 'islam'.
(Other definitions for islam that I've seen before include "Creed", "organised religion", "Adherents of a religion", "World religion", "Major world religion", "The Muslim religion", "Koran its scripture", "Faith with five pillars", "A religion" and "Mohammed's religion".)