Answer:
D. Journalists and reformers
Explanation:
They were the journalists in the Progressive Era (1890's to the 1920's). Upton Sinclair and Ida Tarbell were two of them.
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Answer:
An oligarchy.
Explanation:
Oligarchy is a political concept that refers to minority rule, in which few people rule by having access to capital or inherited title. Informally, the term oligarchy can generally refer to a limited group with great power, often in a political system with or without formal democratic elements.
Oligarchs sometimes rule in formal democratic systems where dominant politicians constitute a small elite that recreates its parliamentary influence by controlling key economic resources and extensive personal networks. New democratic states are often used as examples of this, but there are also examples of oligarchy tendencies in established democratic political systems.
The correct answer among all the other choice is D. U.S. naval blockade of Cuba. This event resulted in the greatest threat of nuclear war. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.