In France you cast your eye over unknown part of Italy (7)
I believe the answer is:
tuscany
'part of italy' is the definition.
(I know that Tuscany is part of Italy)
'in france you cast your eye over unknown' is the wordplay.
I cannot quite understand how this works, but
'you' could be 'u' (homophones) and 'u' is found in the answer.
an anagram of 'cast' is 'tsca' which is present in the remaining letters.
'unknown' could be 'y' (algebra) and 'y' is located in the answer.
A single letter 'n' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for tuscany that I've seen before include "Italian region, capital Florence" , "part of Italy" , "N. Italian region" , "Region of Central Italy, chief city Florence." , "'Chiantishire'" .)