The U. S. landing on the moon in 1969 helped
A. encourage confidence in america’s ability to solve economic problems
B. prove that NASA could put an astronaut into space flight around earth
C. demonstrate American technological superiority in the space race.
D. prevent the soviet union from landing on the moon

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

just finished this it is b. centrifugal force

he sent troops to protect the students as they entered the school.

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