Canada has ten provinces and three territories that are sub-national administrative divisions under the jurisdiction of the Canadian Constitution. In the 1867 Canadian Confederation, three provinces of British North America—New Brunswick, Nova Scotia, and the Province of Canada —united to form a federation, becoming a fully independent country over the next century. Over its history, Canada's international borders have changed several times as it has added territories and provinces, making it the world's second-largest country by area.

A federal territory is an administrative division under the direct and usually exclusive jurisdiction of a federation's national government. A federal territory is a part of a federation, but not a part of any federated state. The states constitute the federation itself and share sovereignty with the federal government, while a territory does not have sovereign status and is constitutionally dependent on the federal government.