a. The actions towards socialist revolution by the NSC.
As @Andriansp putted it,
"Following the Russian revolution, United states undergone a massive worker's strike. Fearing the communist revolution, United states' attorney General allowed unwarranted arrest for those who is suspected as a communists"
b. is incorrect because that's referring to the space race and is irrelevant to this
c. is incorrect because Alger Hiss was convicted of being a soviet spy, not a communist
d. is incorrect because the IWW wanted to overthrow capitalism, which is the exact opposite of being afraid of communism almost
I hope this helps :)
they spoke with the president
in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.