Really!
]]>Yes. He said so, right below the comic.
]]>At the Quidditch World Cup, there are American spectators, mentioned as having a banner saying they’re from Salem.
A species of dragon is called the Hungarian Horntail.
The Weasleys go on vacation in Egypt.
And there are kids at Hogwarts whose names imply ancestors from various Asian countries (Cho Chang and the Patil twins are the first to come to mind) and there are black kids, implying the existence at some point of Africa.
Just to add to the list 🙂
]]>Bulgaria was Ireland’s opponent in the quidditch game.
]]>No Russian references remembered, but I could be wrong.
]]>