What led to senator mccarthy’s downfall? a. the discovery that some of the people he had accused were innocent b. evelations that he was a communist himself c. the uncovering of financial irregularities in his senate campaign d. the broadcast of the mccarthy hearings on television

The answer is C. In 1954 McCarthy was ousted from American political life as his actions were exposed to the American people. He was censured by the Senate for attacking the army. He lost his power though he kept his job. He died in 1957 due to his alcoholic addiction.

c. taught scientists many new things about the earth, but not other planets.

explanation:

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.