No stupid question… it seems Trump is ready to invade (military) Panama and Greenland (red white blueland), so even if with Canada he always talk about economic war and annexing Canada blablabla…
What would happen if USA invades Canada? What would be the reaction of the Canada King (Charles III is the king of Canada)? The Commonwealth? NATO?
It would be the point of no return for the USA, and the conclusive end to the “Pax Americana” . Invading a peaceful neighbor? Unthinkable for a “so-called” stable country. The rest of the world rally to Canada’s side, there would be an effort to ‘contain’ the further damage we could do. (Mexico would finally pay for that wall :-/ ) We would no longer be trusted, and in that vacuum of power the rest of the countries of the world would be thrown into such a frenzy to fill that power, or to align with who they think could.
I’m afraid that damage has already been done, though we’re trying to pretend like things are cool so that you won’t bomb us or something.