The correct answer to this question is this one: "D. having a rock concert in a public park in Japan"
The first three have a key point: requiring or changing by force. The last one just says having a rock concert in a public park in Japan. It's not forced, but voluntary whereas the first three are in a sense, forced.
The answer is A and B are helped.
D) The United States issued the Stimson Doctrine, which
stated that America refused to recognize any territorial changes made as a
result of Japanese aggression in Manchuria. The United States publicly stated
that their government disagreed with Japan's actions. Henry Stimson, the U.S. Secretary of War,
issued a moral statement condemning Japan's invasion of Manchuria.
Answer:
Becasue the government was worried about the country's ability to protect itself.
