William Lyon Mackenzie King

William Lyon Mackenzie King was a Canadian statesman and politician who was the tenth prime minister of Canada for three non-consecutive terms from 1921 to 1926, 1926 to 1930, and 1935 to 1948. A Liberal, he was the dominant politician in Canada from the early 1920s to the late 1940s. King is best known for his leadership of Canada throughout the Great Depression and the Second World War. In August 1944, he ordered the displacement of Japanese Canadians out of the British Columbia Interior, mandating that they either resettle east of the Rocky Mountains or face deportation to Japan after the war. He played a major role in laying the foundations of the Canadian welfare state and establishing Canada's international position as a middle power. With a total of 21 years and 154 days in office, he remains the longest-serving prime minister in Canadian history.