Bulgaria.Bulgaria.Bulgaria.Bulgaria.
In both the book and film series, Viktor Krum only appears once on a broomstick. That one time was during the finals of the 1994 Quidditch World Cup; Ireland vs Bulgaria. in that scene, Krum was using a Firebolt broomstick.
Viktor Fayzulin played for Russia in the 2014 FIFA World Cup.
German President: Friedrich Wilhelm Viktor Albert von PreußenTell me president of which country please..
The Ministry of Magic owns the land where the Quidditch World Cup was placed.
Harry Potter and the Goblet of Fire, the fourth book, features the Quidditch world cup.
egypt
The Quidditch referee at Hogwarts is Madam Rolanda Hooch. During Harry Potter's first year, Severus Snape referred the Gryffindor v Slytherin match in an attempt to protect Harry as Quirrel had tried to kill him in the previous match. The referee for the 1994 Quidditch World Cup was Hassan Mostafa.
The Bluebottle
The Bluebottle.
Why not? By the way: there's more than one country mentioned in HP: England, Scotland, Ireland, Albania, Bulgaria, French, Belarus. If you are asking why Rowling chose Bulgaria as one of the teams in the Quidditch World Cup Final in the fourth book: She was writing the Goblet of Fire in 1994. In the summer of that year there was a FIFA World Cup held in USA. The surprise of the tournament was Bulgaria. The country had given the world good athletes and individual football players, but had never been known for a strong football team as a whole. So the thing is that that year Bulgaria's football team finished 4th after losing to Italy in the semi-finals after beating teams like Germany, France, Mexico, Argentina, and etc. There are suggestions that Rowling got inspired by the great spirit and abilities of such an unknown team. That is the closest and only time Bulgaria came close to a world title in football.
It's a bit like basketball and soccer. wouldn't you agree? but quidditch is mostly creativity.