O D. Internal factors.
This question was on Brainly itself.
Amid the 1850s, there was a sectional emergency. The sectional emergency was a period in American history where each "area" of the United States went about as its own particular element without respect to the prosperity of whatever remains of the country.
Fundamentally, every one of these occasions finished and started off the Civil War. It was the ideal tempest. The majority of the years preceding the sectional emergency, subjugation had been disregarded by Congress and no choices were made certifying or denouncing it.
We have ambulances and hospitals.
We prize America as a land of opportunity.
We begin summer with a tribute to fallen soldiers
We let technology guide how we communicate.
