A it depends I believe is correct answer
American imperialism revolved around more than just politics and economics and national self-interest. They also included notions of humanitarianism, morality, religion, and ideas of civilization
So many men were ready to enlist because of what the war was about. In the South, men wanted to enlist so they could keep their slaves to do their work for them. In the North, men were ready to enlist because they thought slavery was wrong, as it was.
What brought Diocletian to realize that a division was necessary was
that the empire was too large to be ruled by one person only. The
correct answer is D. Diocletian was a Roman emperor who made this unique
move in the history of leadership at the time, and that was to split
his already huge empire into four parts. These four parts were to be
ruled by four "emperors," which was the beginning of "tetrarchy," meaning
the rule of four.