The Vatican City (1)
Luxembourg (1)
Monaco (1 - not sure if its even classified as a city)
San Marino (1 - see above)
Malta is the smallest and least populous of the European Union countries.
Vatican City
Montenegro.
All European countries are industrialized.
Spain was least involved in the slave trade.
K
Finland
Albania
No; most large European cities have at least one.
Montenegro is the least populated Eastern European country.
romania
Vatican City is the least populated Western (or any) European country.