There was no slavery in Canada. In fact, there was an "underground railroad" that helped transport slaves from the US to the safety and freedom of Canada. http://www.blackhistorycanada.ca/events.php?themeid=21&id=6
I don't see why all the hatred, made up or just out of frustration, of Canada by some here. Canada has always been our friend, as far as I can recall. Maybe some minor battles of animal pelts a couple hundred years ago, but nothing major. No slavery? I was not aware of that, but a good thing. No need to fight a war over something that was not a problem. Perhaps some of that could spill over to US. Probably not.
You are full of shit. There was slavery in Canada. http://en.wikipedia.org/wiki/Slavery_in_Canada It was about economics, once Plantation economics had played out the benefit/impetus of slavery would have evaporated as well. How much of the Canadian economy was Plantation based 1830?
As they say, we can learn something every day. Interesting: "Slavery which was practiced within Canada's current geography, was practiced primarily by Aboriginal groups. While there was never any significant Canadian trade in African slaves, native nations frequently enslaved their rivals and a very modest number (sometimes none in a number of years) were purchased by colonial administrators (rarely by settlers) until 1833, when the slave trade was abolished across the British Empire."