One factor essential to the development of early civilization was ___.

A

Explanation:

I am pretty sure that it's A.

Explanation:

Early civilizations had trouble with distributing food because of the little amount of knowledge that they had for obtaining food, which would make A the answer. B wouldn't be the answer because a census is a survey of a demographic of a population that took part of the survey.

answer: c  

the factory goes out of business, causing the workers to lose their jobs.

explanation:

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.