The <a href="https://en.wikipedia.org/wiki/Constitution_Act,_1867" id="mwuw" rel="mw:WikiLink" title="Constitution Act, 1867"><i id="mwvA">British North America Act</i></a> takes effect as the <a href="https://en.wikipedia.org/wiki/Province_of_Canada" id="mwvQ" rel="mw:WikiLink" title="Province of Canada">Province of Canada</a>, <a href="https://en.wikipedia.org/wiki/New_Brunswick" id="mwvg" rel="mw:WikiLink" title="New Brunswick">New Brunswick</a>, and <a href="https://en.wikipedia.org/wiki/Nova_Scotia" id="mwvw" rel="mw:WikiLink" title="Nova Scotia">Nova Scotia</a> <a href="https://en.wikipedia.org/wiki/Canadian_Confederation" id="mwwA" rel="mw:WikiLink" title="Canadian Confederation">join into confederation</a> to create the modern nation of Canada. <a href="https://en.wikipedia.org/wiki/John_A._Macdonald" id="mwwQ" rel="mw:WikiLink" title="John A. Macdonald">John A. Macdonald</a> is sworn in as the first <a href="https://en.wikipedia.org/wiki/Prime_Minister_of_Canada" id="mwwg" rel="mw:WikiLink" title="Prime Minister of Canada">Prime Minister of Canada</a>. This date is commemorated annually in Canada as <a href="https://en.wikipedia.org/wiki/Canada_Day" id="mwww" rel="mw:WikiLink" title="Canada Day">Canada Day</a>, a national holiday.