>>40378103
>What happened to Spain was a bunch of Arab rulers lording over a Christian populace
This is highly disputed and depends on the time and region within Iberia
>not wholesale demographic replacement. The latter is almost always irreversible
Kazakhstan was once 30% Kazakh and now it's back to 70%
https://en.wikipedia.org/wiki/Demographics_of_Kazakhstan
Thirdie birth rates are themselves falling sharply. We've taken over plenty of places as minorities initially, and with climate change putting stress on population pressure and increasing anti western sentiment, plus automation making migrants redundant, I don't see borders getting more welcoming. Most euro countries are still over 80% white and any future wars will mostly kill urbanites