Barbarian groups were able to weaken the Byzantine Empire<span> because the empire itself had several unprotected areas for warring </span>groups<span> to invade.
Hope this helps!
-Sammy</span>
“Even though life is a struggle, people must persevere.”
The Roman Republic was certainly a thriving democracy by the standards of its time, but it should be noted that women, slaves, and many men were not allowed to vote.