With Brazil and Uruguay, the only non European teams in the quarter finals of the 2018 World Cup out of the competitions on the first day of the quarter finals, all remaining teams are European. France and Belgium are already in the semi finals matches after beating Uruguay and Brazil respectively. On the second day of the quarter finals, Russia plays Croatia, and England plays Sweden. This guarantees the last 4 teams standing to be from Europe.
Has all semi finalist of a world cup all been from Europe before? Or more generally have all semi finalist qualified from the same continent? Since all other continents get maximum of 5 seeds (and that would have be even less years ago) I'm assuming this could have only happened for European teams before.