Welcome to Hetalia: Axis Powers Answers. What would you like to know?

I think it has to do with combination of both because England and Iceland are more on the scrawny side and Russia Canada and America are well the opposite. But it could be a combination of both because sealand only has 5 citizens and is a ship( has 7 now)but Wy has 18 and is an island but they are about the same size.