Quote Originally Posted by xerxe View Post
Then why don't you oppose intermixing between different native populations inside the same country?

See comment above; why don't you oppose homogenization between different native populations inside the same country?
I am not sure what you are referring to specifically tbh. Different native populations in European, Asian and African nations is minimal to unheard of as they're mostly homogeneous. Most native people in Italy are Italians, most native people in Japan are Japanese and most native people in Egypt are Egyptian, minus a few exceptions, etc...

A variety of different native populations are more prominent among nations that were founded by immigration like former European colonies like the US and Canada. These nations have mostly had a variety of Europeans from different nations immigrating to them at the 19th and 20th century making the countries more diverse.