1931 - The Statute of Westminster provided that all existing dominions of the British Empire, and all new dominions created thereafter, were fully independent of the United Kingdom so that the British Parliament no longer had legislative authority over them. The exceptions were Newfoundland, which was already showing signs of collapse (the Newfoundland dominion government was suspended in 1935 and direct rule from London was instituted until Newfoundlanders voted to join Canada in 1949); and Canada, which had specifically requested exclusion from the independence provisions of the Statute of Westminster because the federal and provincial governments could not agree on an amending formula for the Canadian constitution.
1942 - On May 18, President of the United States, Franklin D. Roosevelt, writes a private letter to Mackenzie King, Prime Minister of Canada, in which he proposes that the US and Canada agree on an unwritten plan aiming to disperse French Canadians in order to eliminate them more quickly.
1947 - July 23: Mae O'Connor, widow of Liberal Member of the Legislative Assembly Dennis James O'Connor, unsuccessfully runs as the first female candidate in a Quebec election (by-election in her late husband's riding of Huntingdon).