➡️A nation is a stable community of people, formed on the basis of a common language, territory, history, ethnicity, or psychological make-up manifested in a common culture.

Now let me use an example. If Germany and Italy both removed their borders and called themselves multicultural nations, what is the difference between them? For a couple of decades they will stay distinct until the common ethnicity breaks up, then the culture and then the language. The only thing that will unite the people are a common territory and history. Now they are virtually the same. What is the point in even having Italy and Germany now?

This is what we call Globohomo, a movement to homogenise the world as the same culture and race. We do not want that. Humans naturally stay within groups and are tribal. Nationalism will always win.