Global soccer fans — OK, football to you international readers — are flooding the U.S. this summer as 11 cities play host to the World Cup. But soccer isn’t the only thing they’re experiencing. Now, there are many obvious differences between the U.S. and the countries these fans are visiting from — Germany, England, Spain and so on — from how governments work to what language people speak and even to what they call a sport where players kick around a black-and-white ball.