The lusitania was sunk, the Zimmerman note made people worried about intervention, and constant aggression made the US people worried of the potential of war coming to the US. Also U-boats were messing with our allies and us to some extent, on non military boats.
The Holocaust was the systematic, bureaucratic, state-sponsored persecution and murder of six million Jews by the Nazi regime and its collaborators. <span>Holocaust </span><span>is a word of Greek origin meaning "sacrifice by fire." The Nazis, who came to power in Germany in January 1933, believed that Germans were "racially superior" and that the Jews, deemed "inferior," were an alien threat to the so-called German racial community.</span>
You forgot to put the answer choices
I would also go with D.) Mutually assured destruction.
This whole idea mainly started during the Cold War. The United States and Soviet Union didn't want to use their nuclear weapons because they feared that if they did, the other side would retaliate. Ultimately, both sides would lose everything.