John Diefenbaker was the last "Old Conservative" to be Prime Minister of Canada. He was a member of the Conservative Party with deep values ​​as well as being a British Loyalist who supported the Queen. Diefenbaker was also a man well known for not supporting anything he deemed anti-British. This sentiment was most evident when Diefenbaker criticized the Liberal's refusal to support Britain in the Suez Canal crisis and sided with the Americans. This loyalty that Diefenbaker had to the British Commonwealth would not serve him well as Prime Minister of Canada. In 1958, Diefenbaker won the largest majority government in Canadian history, upsetting the new Liberal Party leader, Lester B. Pearson, who had replaced St. Laurent. In the elections Diefenbaker would win 208 seats out of a possible 265. The Liberal Party, led by Pearson, would only manage to obtain 48 seats, thus becoming the Official Opposition. Five years after this historic victory, John Diefenbaker once again rewrote history by losing the largest number of seats in Canadian history. Historians who have written about Diefenbaker remain confused when trying to unravel Diefenbaker's puzzling actions in his dealings with others regarding foreign and domestic policy. Many historians examine some serious mistakes made by Diefenbaker during his tenure as Prime Minister from 1957 to 1963 that led to his collapse from power. Major events leading to the fall of his government in 1963 included; the amount of spending and tax cuts passed by his government immediately after the election, the Avro Canada planes that Canada was building to become a leader in aviation technology, the Bomarc missile crisis in the 1960s in which… . .....son.ca/John Diefenbaker (accessed March 26, 2011).Dusen, TV The Chief. Toronto: McGraw-Hill Company of Canada Limited, 1968Johnston, J. The party's over. Ontario: Longman Canada Limited, 1971 McMahon, PI Essence of Indecision. Quebec: McGill-Queens University Press, 2009Strursberg, P. Diefenbaker: Leadership Lost. Toronto: University of Toronto Press 1976TIME, "Canada: Dollar Devaluation." May. 11, 1962. http://www.time.com/time/magazine/article/0,9171,939383,00.html (accessed March 26, 2011). University of Saskatoon, “Canada's Role During the Missile Crisis Cuban" ." http://www.usask.ca/diefenbaker/galleries/virtual_exhibit/cuban_missile_crisis/index.php (accessed March 26, 2011).University of Toronto, "DIEFENBAKER, JOHN GEORGE."2000.http:// www.biographi.ca/009004-119.01-e.php?BioId=42125(accessed March 26, 2011).