Which factor contributed to the Red Scare in the United States during the 1920s?

AGermany's attacks on United States cargo ships
Bthe radical nature of the national administration in power
Cwidespread hostility toward big business
Dsuccess of the Communist Revolution in Russia

Verified Answer :

The first Red Scare was a result of the Bolshevik Revolution in Russia in 1917- and this revolution was what brought the communists into power in Russia. The US was scared of other countries also adopting the communist system - and the correct answer is d). The US remains weary of communism until today.