Events By ninjajman Period: Apr 4, 1867 to Apr 4, 2012 Canada Period: Apr 4, 1867 to Apr 4, 2012 Canada Jul 1, 1867 1st Prime Minister Confederation: New Brunswick, Nova Scotia, Quebec, and Ontario form the Dominion of Canada. John A. Macdonald becomes the first prime minister. Period: Jul 1, 1867 to Apr 4, 2012 jdfhy Jul 15, 1870 MB joins Confederation Manitoba joins Confederation. The new province was much smaller than today's Manitoba