As a result of the Neolithic Revolution, by 3,000 BCE the world’s human population grew to five hundred thousand.
one million.
twenty-five million.
seventy-five million.

its D.  seventy-five million

Explanation:

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before, mexicans where an indian tribe but when the spanish took over, they changed their language to spanish.

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i don't see how you want other people to do your work for you and it is like you are just handing your assignment to anybody else and having them deal with it instead of your self i thought this site was for asking questions and somebody could you on it not just handing your work to somebody else to deal with it just saying don't mean to be mean just proving a fact.

explanation: