MCDONALD'S opened its first restaurant in San Bernardino, California in 1948, and it has been spreading the gospel of fast food ever since. Its 35,000 restaurants in 107 countries generated sales of over $89 billion in 2013. But as our print-edition article this week discusses, McDonald’s has been struggling of late, thanks in part to stiffer competition. Our interactive map shows where some of America’s biggest fast-food chains are fighting it out (Burger King, which is privately held, is not included). McDonald’s tends to dominate in western Europe. KFC, which is known for their fried chicken, reigns supreme in China and much of Asia. Its parent company, Yum Brands, has been expanding rapidly in China: the number of KFC outlets has increased by 59% there over the past five years and surpassed the American total in 2013. But on outlets alone, Subway is the new bastion of American fast-food culture. The privately-owned company, which started out in 1965, has 43,000 restaurants in 108 countries across the world. It is now the leader across much of Asia, the Americas, and in America itself.