These are the biggest fast-food chains in America

Joe Raedle/Getty Images Research firm Datafiniti recently released a list of the lagest fast-food chains in the United States, based on how many locations each has in the country. The study found that Subway is the largest chain. Its locations account for 18.5% of all fast-food restaurants in the US. McDonald's, Burger King, and Taco Bell are also among the largest fast-food chains in the US. It's true: there are a lot of Subway restaurants in the United States. Research firm Datafiniti recently...