Canadian Liberal politician William Lyon Mackenzie King was the 10th prime minister of Canada and served for 3 terms: from 1921 to 1926, from 1926 to 1930, and again from 1935 to 1948. He was also the nation’s longest-serving prime minister. The Harvard alumnus was also the only Canadian prime minister with a PhD. The grandson of William Lyon Mackenzie, who led the Upper Canada Rebellion of 1837, he later made a prominent contribution to boost Canada’s autonomy. He initially unified the party’s factions that disagreed over conscription and later united the country before entering the World War II. He had also been Canada’s first full-time Minister of Labor and the nation’s Secretary of State for External Affairs. He is also remembered for his contribution to the recognition of British dominions as equal Commonwealth members and for strengthening Canada’s post-war economy.
