<span>The red scare that lay the ground for
</span><span>mccarthyism </span><span> was sparked off by numerous success stories of the communist forces.
The success of communism forces in china, and the increased mentions of soviet nuclear bombs and the discovery of several agents from USSR in the USA territory led to red scare that reached its peak with the sputnik news.
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To show their enemies, USA and much of the west, that they were capable of producing atomic bombs and even using them.
ANSWER:
C. United States is the answer.
