it refers to a sudden rise in a social setting, emotion, an event, group of people, noise, etc. it is an increase in the intensity of something.
the executive order 9066 was used as the first action took by the american government against japan.
after the pearl harbor attack, the united states declared war to japan. though the executive order 9066, president roosevelt condemned 110,000 japanese american citizens to jail. they had no civil rights and were sent to remote internment camps around the country.
the atomic bomb made the japanese surrender. truman states that with the use of the atomic to end the war it would save many american lives. this is still a controversial topic as of today.