There's always more to be said, but in the meantime you can find some answers about slavery and its eventual abolition in Canada in this thread by u/enygma9753.

Canada, driven by the fur trade throughout much of its history, had no plantation-based economy and didn't require the mass importation of African slaves. Those that were brought to Canada came indirectly from the US. While some slaves who fought for the British during the American Revolution escaped with their regiments during the mass exodus of Loyalists at war's end, others fled on their own in the following decades.

Until 1791, Canada (or "the Canadas") was governed by lieutenant-governors and an appointed executive council. Only the colony of Nova Scotia had a legislative assembly. In 1791, as a result of an influx of Loyalist migration the British divided Quebec into Upper Canada (Ontario) and Lower Canada (Quebec). These bodies would pass legislation that severely restricted the practice of slavery in their respective colonies and granted freedom to fugitive slaves who found their way north, years ahead of the rest of the British Empire and decades before the US.

The Underground Railroad was a secret network run by abolitionists in the US and Canada that assisted fugitive slaves to escape from slave states north to free states and Canada. It was dangerous work, as slave catchers were often in pursuit of them. It was actually an incident of an American slave catcher forcibly returning a fugitive slave from Canada that horrified the Lieutenant-Governor of Upper Canada, John Graves Simcoe and prompted him to enact laws to ban the importation of slaves in the colony.

Life was still not easy for the escaped slaves as they often faced open hostility and discrimination from white settlers, inadequate land grants compared to whites, inferior treatment under the law and unfair compensation for their work. Many found the rugged terrain and inhospitable weather to be challenging. Some eventually left Canada to migrate to the colony of free blacks in Sierra Leone.

In spite of this, those that remained would take up arms again for the Crown in the War of 1812, and eventually start their own businesses. Some would even run for local office. One, William Peyton Hubbard (a friend of George Brown, a future Father of Confederation), would be elected 15 times to Toronto City Council and rise to be the city's Deputy Mayor.