The answer would be that the U.S. gained territory that needs to be admitted into the country as either free or slave states. Hope this helps you!
Arguably the main difficulty in maintaining the large land empire of Russia was a "<span>C. lack of industrialization," since this made it nearly impossible for Russia to "catch up" with the West. </span>
Answer:
B
pregnant slaves were a profit and sold their kids at auctions
it's number d.
because Americans immunity system wasn't strong as for that of the Europeans
I hope it helps ;D
