[QUOTE=ewmayer;422932]You [url=https://en.wikipedia.org/wiki/Slavery_in_Canada]sure[/url] about that? (Clearly at a drastically lesser level than their southern neighbo(u)r, obviously.)

OTOH they did name one of their [url=https://en.wikipedia.org/wiki/Great_Slave_Lake]notable lakes[/url] in homage to the practice (in this case, as practiced by a native tribe). Petrw1, that's kinda/sorta in your neck of the, um, plains, yes? (Just a short 1000-mile - sorry, 1600-km - drive NW and you're there.)[/QUOTE]

They also have an island in a lake on an island in a lake [url]https://www.google.com.au/maps/place/Canada/@51.3506826,-68.7968159,2001m/data=!3m1!1e3!4m2!3m1!1s0x4b0d03d337cc6ad9:0x9968b72aa2438fa5!6m1!1e1[/url]