England
Vietnam
Out of those letters, I'd try America.
Austria
England and America to only name two. I would consider looking at a map or an atlas for future reference.
Croatia
Garters are an item of clothing. It contains 7 letters.
Barbara
Barbara
One country that fits your criteria is Finland. It has seven letters, the third letter is 'n,' and the sixth letter is 'a.'
America
Harriet Tubbman
European countries that have seven letters in their name are:AlbaniaAndorraAustriaBelgiumCroatiaDenmarkEnglandEstoniaFinlandGeorgiaGermanyHungaryIcelandIrelandMoldovaRomaniaUkraine