10.D2.5

describe some key developments in Canada's relationship with the United States during this period (e.g., with reference to NORAD, the DEW Line, the St. Lawrence Seaway, the development of the Avro Arrow program and its subsequent cancellation, the Auto Pact, the Cuban Missile Crisis, the Vietnam War and the International Commission of Control and Supervision, environmental concerns such as acid rain), and explain how they challenged or reinforced the nature of that relationship