Mobilised when outlaws confront Midwest state (3,5,5)
I believe the answer is:
new south wales
'state' is the definition.
(New South Wales is an example)
'mobilised when outlaws confront midwest' is the wordplay.
'mobilised' indicates anagramming the letters (I've seen 'mobilize' mean this (I've seen this in other clues)).
'confront midwest' becomes 'es' (I can't justify this - if you can you should give a lot more credence to this answer).
'when'+'outlaws'='whenoutlaws'
'whenoutlaws' anagrammed gives 'newsouthwal'.
'newsouthwal'+'es'='NEW SOUTH WALES'
Can you help me to learn more?
(Other definitions for new south wales that I've seen before include "Name given to Australia when colonised in 1788; a state since 1901" , "Australian state, capital Sydney" , "Sydney's state" .)