Large landed properties in European countries (7)
I believe the answer is:
estates
'large landed properties' is the definition.
'estates' can be an answer for 'properties' (estate is a kind of property). I'm unsure of the 'large landed' bit.
'european countries' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'countries' becomes 'states' ('state' can be a synonym of 'country').
'e'+'states'='ESTATES'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for estates that I've seen before include "Extensive landed properties" , "Country properties" , "Large cars" , "Cars with rear doors" , "residential areas" .)