How did newspaper printing change in the nineteenth century?
a) publishers began printing newspapers in vivid color, which made them more popular.
b) publishers used the rotary press, which greatly increased the speed of printing.
c) publishers began taking money from slaveholders in return for not publishing abolitionist views.
d) publishers began publishing magazines leading to a decline in newspapers.

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:

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he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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to extend a country’s power and influence