Migration is the right answer
<span>A. The European population nearly doubled, the Native American population dropped greatly, and millions of Africans were sent to the Americas as slaves.</span>
I believe Ancient Rome<span> had twice been submitted to sack in the fifth century A.D., after a lengthy decline which followed more than a millennium of dominance, first over central </span>Italy<span> and then over an empire that surrounded the </span><span>Mediterranean Sea.
</span>
