One good organizing topic for the post–Civil War era would be "Reconstruction," since this was the stage that took place immediately after the war, in which the North tried to "Reconstruct" the South in terms of its economy and social structure.
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~Lena~
"c. massive movements of religious reformation" would not be considered a prevalent theme of the era 1968 to present since religions have not changed that much.
Socialism is a political movement which evolved in the Soviet Union of the time. Socialism and communism as ideologies and ideas were developed by Marx, Engels, and also Lenin in part later on, already in the 20th century.
Answer:
People believed that their country needed their help to succeed in the war in Europe. Many World War I soldiers were drafted. How did this fact influence the way the U.S. government handled the war? ... They used CPI propaganda and court-martialed men who avoided registering for the draft.