Answer: the increase of income for working class families
Explanation: All the other ones are literally depressing
The united states dropped the worlds first attomic bomb over the city of Hiroshima in Japan and this explosian wiped 90% of the population a dlater killed many around 80,000+ were dead.
People were willing to take any ideas and anyone who promised a way out of the economical hole they were rapidly falling into. Obviously, they were used for support during genocides and dictatorships, but were too blind to see what their influence was on things like the Holocaust and Stalin's movement
That would be archeologist.
The Study of Artifacts is called Archeology.