Which of the following statements describes a similarity between the external threats that faced both the roman and han empires?

Good Morning!
 
From the statements quoted the correct is as follows:
 
Both empire were frequently attacked by smaller groups living near their borders.

It is true, then, that both empires were strongly and sequentially attacked by smaller forces, but they did great damage to its structure. Rome, for example, fell for exactly that reason.
 
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