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.

The correct answer is:

Seventy-five million.

The Neolithic Revolution also called "Agricultural Revolution" was a transition of many human cultures during the Neolithic Period, from a hunting and gathering lifestyle to one of agriculture and settlement. This made the population increased drastically, and contributed nomadic to become sedentary. Human population doubled at this age.

answer: because they get bored or smth idk

a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”