I think its B. The US and Britain were close allies during this time. Also, they were extremely suspicious of German intentions, since the sinking of Lusitania and the Zimmerman note was caused by them.
Social Darwinism was the theory to justify claims of racial superiority.
A. Bus boycotts in Montgomery, Alabama
D. Ratificación of the 13th, 14th, 15th amendments
Eight hours is all I have to say
Hey there!
"Soviet Union increased its efforts to develop an atomic <span>bomb," since the Soviet Union was the rival super power of the United States after World War II.
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Hope this helps!