Canadian Confederation (French: Confédération canadienne) was the process by which the British colonies of Canada, Nova Scotia, and New Brunswick were united into one Dominion of Canada on July 1, 1867.[1][2] Upon confederation, the old province of Canada was divided into Ontario and Quebec; along with Nova Scotia and New Brunswick, the new federation was thus composed of four provinces.[3] Over the years since Confederation, Canada has seen numerous territorial changes and expansions, resulting in the current union of ten provinces and three territories.