@LordMordred This is why monoculturalism didn't survive into the modern era.

You want a white ethnostate? Cool.

Oh, they have to be Christian too? Which denomination?

Oh, they have to also speak your language, have the same culture, and hold the same values as you too?

Then you realize that your ethnostate is too small to defend itself, and so you make alliances with other states, and before you know it . . .

. . . you're multicultural again.