William Lyon Mackenzie King was a prominent Canadian politician who served as the Prime Minister of Canada for three non-consecutive terms between 1921 and 1948. He is known for his leadership during significant events such as the Great Depression and World War II. King was a member of the Liberal Party and played a crucial role in shaping modern Canadian policies. King was born on December 17, 1874, in Berlin, Ontario, now known as Kitchener. He was educated at the University of Toronto and later studied at Harvard University. His political career was marked by his focus on social welfare and economic recovery, making him one of Canada's most influential leaders.