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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c

the articles of confederation placed most of the power on the feds

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.