asia (largest country:china*) (smallest country:maldives)
america (largest country:canada) (smallest country:saint kitts and nevis)
africa (largest country:algeria) (smallest country:seychelles)
europe (largest country:ukraine*) (smallest country:vatican city)
oceania (largest country:australia) (smallest country:oceania)
the asterisk means thatrussia is in both europe and asia and for the largest country of a continent,i am excluding countries that are in more than 1 continent by contiguous borders. australia can be considered part of more than 1 continent,but has no contiguous borders with asia,just two external territorries in asia. if you were to take france to be purely in europe,it would be smaller than ukraine. france is purely in europe by contiguous borders,but that portion of france is smaller than ukraine.