After the Soviet Union launched Sputnik in 1957 which of the following actions were taken by the U. S. goverment to curb fears over the spread of communism.
A
Children were taught to duck and cover in classrooms and playgrounds.
B В
Members of Congress were put on trial to prove they were not communists.
C.
The U. S. increased spending on math and science education
D
John F. Kennedy sent the military to occupy Cuba to keep it from assembling nuclear missiles.

D. John F. Kennedy sent the military to occupy Cuba to keep it from assembling nuclear missiles.

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

c. archbishop desmond tutu promoted the acknowledgement of the rights of black africans and expose human rights abuses.

d. leader haile selassie modernized african society through the institution of progressive social, economic, and educational reforms.