1) The answer is d) a long-term commitment to containment. This is because containment was the primary foreign policy strategy of the United States during the Cold War period. The US aimed to prevent the spread of communism by containing the Soviet Union and its influence.
2) The answer is a) Conflict occurred when one side tried to expand its sphere of influence into another country or region. This claim supports the pattern of interaction between the United States and the Soviet Union during the Cold War. Both sides sought to expand their influence and control over other countries, leading to conflicts such as the Korean War and the Vietnam War.
3) The answer is c) Memoirs of people living in East Germany, Cuba, and Afghanistan. These memoirs would provide firsthand accounts of the experiences and impact of Cold War events on individuals living in these regions. They would offer insights into the social, political, and economic consequences of the Cold War beyond just the United States and the Soviet Union.