American and Canadian military spending in Newfoundland during the 1940s caused an economic boom and allowed the Commission of Government to consider how to reintroduce a system of democratic government. However, the British government believed that wartime prosperity would be short-lived. So it established the Newfoundland National Convention in 1946 to debate constitutional options, which were submitted to the people in two referenda in 1948. By a slender majority, Newfoundlanders chose to become a province of Canada, rather than return to the status of a self-governing dominion. The Commission of Government continued to govern Newfoundland until March 31, 1949, when the dominion joined Canada.