Constitution Act, 1867
The Constitution Act, 1867 was originally known as the British North America Act (BNA Act). It was the law passed by the British Parliament on 29 March 1867 to create the Dominion of Canada. It came into effect on 1 July 1867. The Act is the foundational document of Canada’s Constitution. It outlines the structure of government in Canada and the distribution of powers between the central Parliament and the provincial legislatures. It was renamed the Constitution Act, 1867 with the patriation of the Constitution in 1982.