I came to Canada when I was 5, so it wasn't that hard to fully integrate into society.
Sure. Why not.
Yes they can. The only reason they cant is not their fault its the discriminitory and hateful people who are already there's fault.
As long as they learn traditions, language etc.
If they come from a similar culture, then yes. If we are talking about, for example, African muslims going to the UK, then no way.