The powers flowing from the Constitution Act are divided between the Government of Canada (the federal government) and the provincial governments to exercise exclusively. The major difference between a Canadian province and a territory is that provinces receive their power and authority from the Constitution Act, 1867 (formerly called The British North America Act, 1867), whereas territorial governments are creatures of statute with powers delegated to them by the Parliament of Canada. Together, the provinces and territories make up the world's second-largest country by total area. Over its history, Canada's international borders have changed several times, and the country has grown from the original four provinces to the current ten provinces and three territories. In the 1867 Canadian Confederation, three provinces of British North America- New Brunswick, Nova Scotia, and the Province of Canada (which upon Confederation was divided into Ontario and Quebec)-united to form a federation, becoming a fully independent country over the next century. The provinces and territories of Canada ( French: Provinces et territoires du Canada) are sub-national divisions within the geographical areas of Canada under the jurisdiction of the Canadian Constitution. For the biological term, see Circumboreal Region. For the historic colony, see Province of Canada.