"<span>Slave labor helped the economy grow because it was taxed," would be the best option from the list, but it had less to do with taxation and more to do with free labor. </span>
Freedom and liberty make market economies possible
Here, speed has increased by double to it's original value.
p = m*v
As they are directly proportional, momentum will also increase by it's double value.
Please put that in"Physics" section not in "History".
Hope this helps!
My best answer is C. Hunter-gatherer societies. Hope this helps :)