Why were many Americans fearful and suspicious of communists during the 1940's and 1950's?

Which facts represent the economic reality the nation faced in 1933? choose all answers that are correct.

Which action by the us war department angered chief red cloud to the point that he refused to sign the treaty of fort laramie ? a) the killing of buffalo by the united states troops b) the appointment of troops to the powder river basin c) the burning of parts of the powder river basin d) the murder of chief red cloud’s wife

(05.04 mc) how did the roman transportation system keep the empire strong? plz