I thinks it’s either C or D. I’m not sure!
Answer:
A direct democracy is any form of organization in which all citizens can participate directly in the decision-making process. ... The most striking example of the first direct democracies is that of Athens (and other Greek cities), in which people gathered in the squares and made political decisions there.
1) invasions by nomadic peoples from Central Asia" is the one unfying factor that contributed to the fall of the Han dynasty, the fall of the Roman Empire, and the
fall of the Abbasid Empire.
Explanation:
The fall of the empire and therefore the dynasty were similar as a result of each toughened social unrest throughout their collapse. The autumn of Rome and Han dynasty China were additionally similar as a result of they each round-faced roving invasions that greatly contributed to their decline.