Ten Most Impactful World Events Between 1945-1970 By hihihiheyheyhey 1945 Canada Joins the UN 1949 The Soviet Union Detonates the First Atomic Device Period: 1950 to 1953 Korean War 1956 Hungarians Unsuccessfully Revolt Against Soviet Domination of their Nation 1957 The Fear of a Soviet Nuclear Attack Against North America led Canada and the US to Sign the North American Air Defence Agreement 1960 Increasing American Military Involvement in Vietnam Leading to Large Scale Protests in Canada and America 1961 Canada Led the Action to Expel South Africa from the Commonwealth 1961 Cuban Missile Crisis 1963 John. F. Kennedy was Assassinated 1970 The 1970 White Paper on Canadian Foreign Policy Stated New Goals for Canadian Foreign Policy