PLZ HELP EASY QUESTION ASAP!!!
Which TWO causes of decline were common to the Roman, Han, and Gupta empires?
A : Political movements worked to overthrow the government to create a utopia.
B : Powerful lords broke the empire into three separate parts.
C : Trade with other nations declined as the government weakened.
D : Nomadic invaders sacked and destroyed property within the empire.
E : New religions replaced those of the people in the empire.