King quickly dismantled wartime controls. Unlike World War I, press censorship ended with the hostilities. King's government introduced the Canadian Citizenship Act in 1946, which officially created the notion of "Canadian citizens". Prior to this, Canadians were considered British subjects living in Canada. On January 3, 1947, King received Canadian citizenship certificate number 0001. King also laid the groundwork for the Dominion of Newfoundland's later entry into Canadian Confederation, stating, "Newfoundlanders are no strangers to Canada, nor are Canadians strangers to Newfoundland." Pro-Confederation Newfoundlanders Frederick Gordon Bradley and Joey Smallwood argued that joining Canada would raise the standard of living for Newfoundlanders; Britain also favoured Confederation. A runoff vote was held on July 22, 1948, and 52.3 percent of voters decided that Newfoundland should enter Canada. After, Smallwood negotiated the terms of entry with King. Newfoundland entered Confederation on March 31, 1949, becoming Canada's tenth province. Retirement With his health declining, King declared in May 1948 that he would not be Liberal leader going in the next election. The August 7, 1948, convention (held exactly 29 years after King became Liberal leader) picked St. Laurent, King's personal choice, as the new leader of the Liberal Party. Three months later, on November 15, King retired after years as prime minister. King was the longest-serving prime minister in Canadian history; he also served in the most parliaments (six, in three non-consecutive periods) as prime minister. Retirement and death (1948–1950) King had plans to write his memoirs. However, he did not enjoy a lengthy retirement and died on July 22, 1950, at his country estate in Kingsmere from pneumonia. He is buried in Mount Pleasant Cemetery, Toronto. Personal style and character King lacked a commanding presence or oratorical skills; he did not shine on the radio or in newsreels. There was scant charisma. Cold and tactless in human relations, he had allies but very few close personal friends. His allies were annoyed by his constant intrigues. Scholars attribute King's long tenure as party leader to his wide range of skills that were appropriate to Canada's needs. King kept a very candid diary from 1893, when he was still an undergraduate, until a few days before his death in 1950; the volumes, stacked in a row, span a length of over seven metres and comprise over 50,000 manuscript pages of typed transcribed text. One biographer called these diaries "the most important single political document