Seven different nations will call California their temporary home this summer.   Both Los Angeles and San Francisco will stage a total of 14 World Cup matches, including the United States Men’s National Team opener at SoFi Stadium. But California will also host seven countries’ base camps during the six-week long tournament.  The 2026 FIFA World Cup is the largest in history. 48 teams will kick off in 16 different host cities spread across three countries on one continent. All 48 participating