1. D. he ordered the united states to join the vietnam war.
2. C. Roosevelt vowed to get revenge for the Pearl Harbor attack
Answer:
The dropping of the atomic bombs on Hiroshima and Nagasaki happened on the 2nd World War.
Explanation:
<em>In 1945, the Pacific War between the Empire of Japan and the Allies entered its fourth year. This war was the result of the pearl harbour incident and thus on August 6 and 9, 1945, United States bombed Hiroshima and Nagasaki, respectively.</em>