Only two continents have ever won the football World Cup: South America and Europe. Since 1962, the sequence has alternated. This table lists the World cup winners and the continent.
So, my prediction, some South American country. My choice – my eternal favourites Brazil (though their squad could have been much stronger).
This analysis falls into the same traps that most financial analysis probably fell- assuming that all swans are white because you haven’t seen a black swan.