Provinces and territories of Canada - Wikipedia
https://en.wikipedia.org/wiki/Provinces_and_territories_of_CanadaOntario, Quebec, New Brunswick, and Nova Scotia were the original provinces, formed when several British North American colonies federated on July 1, 1867, into the Dominion of Canada and by stages began accruing the indicia of sovereignty from the United Kingdom. Prior to this, Ontario and Quebec were united as the Province of Canada. Over the following years, Manitoba (1870), British Columbia (1871), and Prince Edward Island (1873) were added as provinces.