Which of the following unite the roman empire?
a) constantine moving the capital from byzantine to rome.
b) the move of the capital from rome to constantinople.
c) the ruling combination of constantine's sons.
d)raising taxes to pay for a stronger army.

B)

Explanation:

When Constantine moved the Roman capital to Byzantine, it united the empire.

Answer

B)The move of the capital from Rome to Constantinople.

- "made the south's economy grow rapidly and a small effect that a lot of people don't know is that it made the more demand of slaves and cotton products. and also new states formed due to plantations growing in size."

< 3

explanation:

i have ni idea