Already done, by the Brits, in 1931. The Royals of Canada are Canadian, as well as any other nationalities they might have.

And, this is a Federal thing, and not something any province can legislate on.

A province has little say over a federal constitutional issue.

They'd have to separate first, because that's under the federal government's domain, not the provinces.

Could you try asking in English, and ask a complete question?

It would be deemed unconstitutional and be struck down.

Please re-post this question after you correctly translate it from French, because it currently makes no sense as a question.

monarchy spam troll