Answer: A) The major difference between Gaddis's and Sherwin's historical interpretations on the origins of the Cold War is the level of agency assigned to the Soviet Union. Gaddis argues that the Soviet Union's aggressive expansionist policies and their unwillingness to compromise with the West were the primary causes of the Cold War. In contrast, Sherwin emphasizes the role of the United States in provoking the Soviet Union through its use of atomic weapons and its aggressive foreign policy.
B) One specific event that could be used to further support Gaddis's argument is the Berlin Blockade of 1948-1949. During this crisis, the Soviet Union blockaded all land access to West Berlin, a Western enclave within East Germany. The United States responded by organizing a massive airlift to provide food and supplies to the isolated city. The Berlin Blockade was a clear example of Soviet aggression and unwillingness to compromise with the West, further supporting Gaddis's argument that the Soviet Union was primarily responsible for the Cold War.
C) One specific event that could be used to further support Sherwin's argument is the Cuban Missile Crisis of 1962. During this crisis, the United States discovered that the Soviet Union had secretly placed nuclear missiles in Cuba, just 90 miles from the U.S. coast. The United States responded with a naval blockade of Cuba, and the world was on the brink of nuclear war. The Cuban Missile Crisis highlights the aggressive foreign policy of the United States and its willingness to engage in brinksmanship, which supports Sherwin's argument that the U.S. was partly responsible for provoking the Soviet Union during the Cold War.