Lester Bowles "Mike" Pearson OM CC OBE PC PC was a Canadian scholar, statesman, soldier and diplomat, who won the Nobel Peace Prize in 1957 for organizing the United Nations Emergency Force to resolve the Suez Canal Crisis. He was the 14th Prime Minister of Canada from 22 April 1963 to 20 April 1968, as the head of two back-to-back Liberal minority governments following elections in 1963 and 1965. During Pearson's time as Prime Minister, his Liberal minority governments introduced universal health care, student loans, the Canada Pension Plan, the Order of Canada, and the Maple Leaf flag. His Liberal government also unified Canada's armed forces. Pearson convened the Royal Commission on Bilingualism and Biculturalism, and he kept Canada out of the Vietnam War. In 1967, his government passed Bill C-168, which abolished de facto capital punishment in Canada by restricting it to a few capital offenses for which it was never used, and which themselves were abolished in 1976. With these accomplishments, together with his groundbreaking work at the United Nations and in international diplomacy, Pearson is generally considered among the most influential Canadians of the 20th century and is ranked among the top six greatest Canadian Prime Ministers.

https://en.wikipedia.org/wiki/Lester_B._Pearson