Which land is it that's completely inhabited by whites only? It's not the one that Stockholm's in. Fun facts about Sweden: Nationally, about 10% of the population are immigrants or at least one of their parents was. In the greater Stockholm metro, it's more like 25%. Here in my suburb, it's about 60%. And to the best of my knowledge, Sweden's never had anything like the White Australia programme.
Yes, but the "old" kind of immigration was mostly people crossing the border, I'm from Norway and I got relatives that both have lived and do live in Sweden. In US terms it's pretty much like moving from one state to the other. The EU gave us "exotic" immigration from Poland, the Baltics, the Balkans and a few more from Western Europe, but globe-spanning immigration with a radically different culture in any significant numbers is really just the last decade or so. Sweden is going to change a lot over the next years, far more than the numbers might suggest.