ELI5: Explain Like I'm 5


Nationalism is the belief that your country or culture is better or more important than any other. It is kind of like saying: "My country is the best, and I am really proud of it!" Your country can be anything from the place you live, to the culture you identify with, to the language you speak, and more. Nationalism often leads people to cheer for their country when it does something great, and to defend it when it is in trouble.