Major League Baseball may conclude its season with the World Series, but there's nothing in sports like the World Cup. And, fittingly for its name, the 2026 edition of the FIFA tournament is bigger than ever. It will feature 48 teams playing matches across the United States, Canada and Mexico. We know most of the teams who will be participating--there are a few qualifiers who still have to make it through playoffs--but a major piece of the puzzle remains: Which nations will be grouped together?