No, actually we did have Black African slavery because while some Aboriginal people were enslaved, mostly they escaped and were deemed "ill-suited". And we didn't have a plantation economy so slaves were mostly used as domestic workers and tradespeople in cities/towns. Canada didn't abolish slavery, it was done for us when our British rulers "emancipated" the slaves, mostly because of slave revolts in the Carribean colonies. The British turned to indentured slavery from its other colonies shipping 'volunteers" who signed up because they were more manageable.
I'd suggest you consult a book by a Toronto based archeologist/historian Karolyn Smartz Frost, I've Got a Home in Glory Land. Its in the library. Its a long read which chronicles a pair of escaped US slaves as they make their way North and establish the first "taxi' business in Toronto, and investing their profits to buy property to help other escaped slaves establish themselves here.