### Clue: May, a public prosecutor in US? No, further north (6)
### Answer: CANADA 
 ### Explanation: Definition: further north
 CAN(used to request for permission, as in "can I …?", but in more formal speech and writing, it's "may I .…?" and "you may …") + A + DA(abbrev. for "district attorney";a public prosecutor in the US).
Defn: A country further north of the USA.