To what period in American history do the following statements apply? suspicion of Communists, immigrants, and political radicals;
fear of a worldwide Communist revolution;
fear of the demise of the American Capitalist system.
New Deal
Roaring Twenties
Prohibition
Red Scare

Red Scare is the correct answer.

Explanation:

to protect the united states' role as a world leader, president truman wanted to prevent the soviet union from spreading communism beyond its post-world war ii boundaries. he declared that the united states must assist any nations struggling to prevent a communist takeover.