Canada in the Twentieth Century By DaliaChami Jul 28, 1914 World War One Begins Apr 9, 1917 Battle of Vimy Ridge Jun 28, 1919 Treaty of Versailles is signed Oct 29, 1929 Great Depression begins Sep 1, 1939 World War Two Begins Mar 31, 1949 Newfoundland joins Confederation Apr 4, 1949 Canada joins NATO Jun 25, 1950 Korean War begins Mar 26, 1953 Polio Vaccine becomes Available Jul 27, 1953 Korean War ends Oct 16, 1962 Cuban Missile Crisis begins Oct 28, 1962 Cuban Missile Crisis ends Feb 15, 1965 Canada gets its own flag Oct 5, 1970 October Crisis starts Apr 17, 1982 Constitution is Patriated Apr 30, 1987 Meech Lake Accord
