The First World War destroyed empires, created numerous new nation-states, encouraged independence movements in Europe's colonies, forced the United States to become a world power and led directly to Soviet communism and the rise of Hitler.
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.
Answer:
John Brown led the Marine troop that recaptured the armory at Harpers Ferry.
Answer:
C. The threat of nuclear war.