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.
Answer:
I think it is C. It could be D but im pretty sure its C. I hope im right and that my answer helps you
Explanation:
We know this thanks to archaeologists who excavated many places and discovered that many early civilizations gathered around large rivers where they could develop agriculture. This was seen in places such as Mesopotamia, India, China, Egypt, etc.
