Despite fighting a war to rid ourselves of it, Americans remain fascinated by the royal family. Heck, a member of The Fix team even has a cat named Pippa. (It's sad, we know.)
But how did the royal family get to where it is today? CGP Grey, one of the great explainers of political and other things on the Internet, takes you through it here as Britain celebrates Queen Elizabeth II becoming its longest-serving monarch ever.