Because elections are not held very often.
Canada became a federation in 1867, 144 years ago (as of 2011). With 22 Prime Ministers, that means an average term of ~6½ years. The longest a Prime Minister has ever served for is 22 years (Mackenzie King), though not continuously. The shortest is 69 days (Charles Tupper). So, 22 doesn't really seem like an unreasonably small number.
There have been 22 Prime Ministers of Canada.
Lester B. Pearson was the 14th Prime Minister of Canada.
Yes, John George Diefenbaker was the 13th Prime Minister of Canada from 1957 June 21 to 1963 April 22.
Japan has had 62 Prime Ministers since the first in 22 December 1885 when Ito Hirobumi was elected. Japan's current Prime Minister is Yoshihiko Noda.
Louis Stephen St. Laurent and John George Diefenbaker were the Prime Ministers of Canada in the 1950's.St. Laurent was the 12th Prime Minister of Canada from 1948 November 15 to 1957 June 21.Diefenbaker was the 13th Prime Minister of Canada from 1957 June 21 to 1963 April 22.
David Lloyd George (Prime Minister, 1916-22) was a member of the Liberal Party.
Lester B Pearson was the Prime Minister of Canada in 1965. Pearson was the 14th Prime Minister of Canada from 1963 April 22 to 1968 April 20.
A number is prime if its ONLY factors are 1 and the number that you are testing. 22 has factors of 22 & 1, as well as 2 & 11. By the way, 2 is the only even prime number.
Her Majesty's Government is the leadership, under Queen Elizabeth II, of the United Kingdom of Great Britain and Nothern Ireland. Led by the Prime Minister and the ministers that he selects, 22 of these ministers, along with the Prime Minister, make up the decision-making body, known as the Cabinet.
Nobody was elected Canada's prime minister in 1968, or at any other time. Each Canadian Prime Ministers is appointed by the Governor General of Canada, on the basis that she or he has the support, or "confidence" of a majority of elected Members of Parliament. Pierre Elliot Trudeau was appointed as Prime Minister on April 20, 1968, prior to the election, because he was the individual most likely to hold the confidence of a majority of elected MPs at that time. He remained Prime Minister after the election in 1968, because he was supported by most of the Members of Parliament elected in that election.
The only factors of 22 are 2 and 11. Since both are prime numbers, prime factorization of 22 would be: 22 = 2 x 11
2 is a prime number. It is only evenly divisible by itself and one.22 is composite. 22 = 2 * 1113 is a prime number. It is only evenly divisible by itself and one.23 is a prime number. It is only evenly divisible by itself and one.