Answer:
It began when the Soviet Union (USSR) began building missile sites in Cuba in 1962. Together with the earlier Berlin Blockade, this crisis is seen as one of the most important confrontations of the Cold War. It may have been the moment when the Cold War came closest to a nuclear war.
Explanation:
One effect of the Social Gospel movement is that it provided inspiration to other progressive-minded reformers. It began in the early 20th century.
Answer:
spurred the Germans to strategically retreat to the Hindenburg Line in March 1917 rather than continue battling over the same land that spring
Explanation:
history
D is the answer for this question as it is the most likely.