Canada Constitution Day

The Constitution of Canada is the supreme law in Canada. It outlines Canada's system of government and the civil and human rights of those who are citizens of Canada and non-citizens in Canada. Its contents are an amalgamation of various codified acts, treaties between the Crown and Indigenous Peoples (both historical and modern), uncodified traditions and conventions. Canada is one of the oldest constitutional monarchies in the world.

According to subsection 52(2) of the Constitution Act, 1982, the Canadian Constitution consists of the Canada Act 1982 (which includes the Constitution Act, 1982), acts and orders referred to in its schedule (including in particular the Constitution Act, 1867, formerly the British North America Act, 1867), and any amendments to these documents. The Supreme Court of Canada has held that the list is not exhaustive and also includes a number of pre-confederation acts and unwritten components as well.

The British North America Act, 1867 established the Dominion of Canada as a federation of provinces. Initially, on 1 July 1867, four provinces entered into confederation as "One dominion under the name of Canada": Canada West (former Upper Canada, now Ontario), Canada East (former Lower Canada, now Quebec), Nova Scotia, and New Brunswick. Title to the Northwest Territories was transferred by the Hudson's Bay Company in 1870, out of which the province of Manitoba (the first to be established by the Parliament of Canada) was created. British Columbia joined Confederation in 1871, followed by Prince Edward Island in 1873. The Yukon Territory was created by Parliament in 1898, followed by Alberta and Saskatchewan in 1905 (all out of parts of the Northwest Territories). Newfoundland, Britain's oldest colony in the Americas and by then also a Dominion, joined Confederation in 1949. Nunavut was created in 1999 from the Northwest Territories.