Answer:
Option D
Explanation:
Im pretty sure is D.Both A and B
It was to prevent slavery in new the lands gained from the Mexican War.
The U.S doubled the size of its territory
B. The northeast.
The northeast had more factories and more railroads than any other part of the country at that time.
<span>The Seven Year's War shifted the balance of power in favor of the "English," due mostly to the fact that the English were able to make significant territorial gains. </span>
