The decline of both the Han Dynasty and the Roman Empire were a slow process. What of these factors was a catalyst for the decline of both these great powers? Group of answer choices

-heavy taxation of the lower classes, who could not afford to pay the high taxes demanded of them

-the use of mercenary soldiers to increase the size and strength of the military

-trade that depended on safe ocean travel for success

-the emperor’s decision to make himself an absolute leader whom his people must worship