Which of these BEST describes how the actions of Senator Joseph McCarthy impacted the Cold War prior to 1954?

McCarthyism

Explanation:

Senator Joseph McCarthy began the period of McCarthyism during the 1940s and 1950s. In the McCarthy period, hundreds of Americans blamed for having connections with communists and questioned before the government. Under McCarthyism, many arrested without proper evidence. The targets of suspicions were government employees. Many people lost their jobs while some were imprisoned.

C. Domestic tensions rose as people feared communist infiltration of major federal departments of government.

Explanation:

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the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.