World War II

• Sonar

• Jet Engines

• Radar

• Cipher machines

• F

• G

• H

• J

Which action prompted the United States to officially enter World War II?

• The German use of blitzkrieg tactics in Europe.

• Japanese military actions in Indochina.

• German submarine attacks on U.S. merchant ships.

• The Japanese bombing of a U.S. military base.

What was one reason Japan attacked the U.S. naval base at Pearl Harbor?

• The U.S. strategy of island hopping had disrupted Pacific trade routes.

• The Japanese naval fleet had been defeated at the Battle of Midway.

• Japanese Americans had been relocated to internment camps.

• U.S. trade sanctions had caused shortages of oil, gas, and rubber (embargo).

• A

• B

• C

• D

How did President Harry S. Truman's decision to drop the atomic bombs affect international relations?

• It initiated the arms race with the Soviet Union (USSR).

• It prompted other nations to begin investigations of war crimes.

• It enabled the United Nations to administer territory in Japan.

• It led to the establishment of the first global peacekeeping organization.

• A

• B

• C

• D

• A

• B

• C

• D

During World War II, the U.S. Army distributed posters like the one above with the goal of encouraging

• the sale of war bonds.

• young men to voluntarily enlist.

• the creation of a selective service.

• young men to return to school.

• F

• G

• H

• J