Rule one: follow mother land! (6)
I believe the answer is:
malawi
'land' is the definition.
(Malawi is an example)
'rule one follow mother' is the wordplay.
'rule' becomes 'law' (law is a kind of rule).
'one' becomes 'i' (Roman numeral).
'follow' means one lot of letters go next to another.
'mother' becomes 'ma' (ma can mean mother).
'law'+'i'='lawi'
'lawi' after 'ma' is 'MALAWI'.
(Other definitions for malawi that I've seen before include "Country formerly known as Nyasaland" , "Country in east central Africa" , "A law I'm making up in Southern Africa" , "Landlocked country of south central Africa" , "Country to west of Lake Nyasa" .)