 Suddenly, you have nation states and new borders drawn in the 20th century. It's just the whole world looks different in the wake of that, and new identities emerge and new stories emerge, right? And every country, including the U.S., tells itself stories partly to unify, partly to create that shared identity, but one of the things that you do by creating a story, a quote-unquote shared identity, is you often have to leave out the ugly parts or the parts that might create disunity.