The European Championships and Copa América, two tournaments separated by sea but bound by a shared love, are preparing a feast of football — or fútbol, or soccer — with little precedent. Together, when they kick off Friday and June 20, respectively, they will elevate 40 men’s national teams onto stages dwarfed by only the World Cup. They’ll feature the sport’s top 16 international squads, and 23 of the top 25. They’ll fill TV screens from American dawn to dusk. On July 14, five hours apart, for the first time ever on the same day, they’ll crown champions.