How did the Persians improve communication throughout their empire? A. They used carrier pigeons to send messages.
B. They built roads and invented a postal service.
C. They had fast runners relay messages over long distances.
D. They made their subjects use only one common language.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.

is there a year set? the question is incomplete

what is the question you are trying to ask?

answer; regard the action of other people negatively;