Which of those European countries is the smallest?
Liechtenstein
Andorra
Malta
Luxembourg
With an area of just 160 square kilometres Liechtenstein is the fourth smallest country in Europe after Vatican City, Monaco and San Marino. 
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Answers by country
Liechtenstein
Andorra
Malta
Luxembourg
answers
 Estonia
Estonia12
 Romania
Romania15
 Spain
Spain10
 Unknown
Unknown17
 Greece
Greece30
 the Netherlands
the Netherlands19
 Republic of Ireland
Republic of Ireland14
 Italy
Italy42
 France
France10
 Poland
Poland12234
 the United States
the United States218
 Switzerland
Switzerland17
 Germany
Germany254
 the United Kingdom
the United Kingdom149
 Austria
Austria55
 Australia
Australia40
 Canada
Canada32
 India
India62
 Pakistan
Pakistan13