1. A primary reason for Truman's decision to drop the atomic bombs on Japan was that he

A) thought that it would lead to less deaths than a land invasion

B) thought that Japan was developing nuclear weapons

C) feared a Soviet and Japanese alliance

D) wanted to retaliate for the Pearl Harbor attack



2. Why was the Manhattan Project kept top secret?

A) The United States did not want Great Britain or France to know that it had nuclear technology.

B) No one was sure if the atom bomb would actually ever work and they didn't want negative feedback.

C) The Allies were afraid that the technology would be stolen by spies belonging to Germany or Japan.

D) The United States was developing the technology illegally and with stolen technology and materials.



3. The Three Non-Nuclear Principles were intended to

A) prevent all nations from ever using nuclear weapons again

B) restrict the use of nuclear technology for energy and medicine

C) keep Japan from ever developing or using nuclear weapons

D) insure that Japan uses safe methods to produce nuclear technology