These are the most popular restaurant chains, broken down by generation—baby boomers, Gen Xers, and millennials.

Over the years, chains have had a tremendous influence on American culture, from Little Caesars making takeout ... part of a conglomerate that includes Dr Pepper, Snapple, and 7 Up.

Dr. Pepper drinkers have been impatiently awaiting the launch of a new flavor, and this one is sure to rock their world.