Australian half of 1A visits mother country; ... (7)
I believe the answer is:
america
'country' is the definition.
(America is an example)
'australian half of 1a visits mother' is the wordplay.
'australian' becomes 'au'.
'half of' suggests halving the letters.
'ea' becomes 'eric' (I can't justify this - if you can you should believe this answer much more).
'visits' indicates putting letters inside (visit can mean to go into).
'mother' becomes 'ma' (Ma is another word for mother or mum).
'au' with half the letters taken is 'a'.
'eric' going into 'ma' is 'merica'.
'a'+'merica'='AMERICA'
Can you help me to learn more?
(Other definitions for america that I've seen before include "West Side Story song" , "Curious camera I take to the continent" , "Continent consisting of two great land masses" , "Land of the free and home of the brave?" , "country targeted by 3 [ROMNEY]" .)