Question

The Japanese attack on Pearl Harbor in 1941 is an illustration of the

effectiveness of a policy of appeasement in stopping aggression
success of the pacifist movement in the United States
role of communism as a negative influence in global affairs
impact a single event can have on public opinion in a time of crisis

Answer 1

Impact a single event can have on public opinion in a time of crisis. The American people went off on the Japanese after this. Japanese people in the United States post-Pearl Harbor were put into large camps and forced to live there until the end of WWII. The US officially apologized in 1988.

Answer 2

For the answer to the question above, The Japanese attack on Pearl Harbor in 1941 is an illustration of the impact a single event can have on public opinion in a time of crisis, which is the last one among the choices.