Bro I need more info than just this but I think it’s B because I took the test
<span>The summers in New England were less hot than the summer in Virginia, so more of their crops would grow and less of them would be killed by the heat. Virginia is a southern state, or colony at the time, and the Colonists, coming from cool and stormy England, would have been unprepared for the sweltering heat.</span>
The answer is Civil War. It was battled over the subject of national supremacy versus states' rights. It established that the national government was highest or supreme, its sovereignty or dominance derived directly from the people, and therefore the states could not legally separate from the Union.
Slaves helped increase the demand for manufactured goods and made them more profitable for the sellers. This helped the industrial revolution to grow. If this helps please give rate, thanks and brainliest ;)