Area united in arrangement of Saladin is region once ruled by Moors (9)
I believe the answer is:
andalusia
'area' is the definition.
(I know that Andalusia is a area)
'united in arrangement of saladin is region once ruled by moors' is the wordplay.
I cannot quite see how this works, but
'united' could be 'u' (abbreviation) and 'u' is located in the answer.
an anagram of 'saladin' is 'andalsi' which is present in the left over letters.
A single letter 'a' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for andalusia that I've seen before include "Spanish territory" , "Southernmost region of Spain, where they dance flamenco" , "Seville's region" , "Spanish autonomous region, capital Seville" , "somewhere in Spain" .)