Answer:
-Civil war came about as more than twenty men laid claim to the position of emperor.
-Repeated invasions from all directions resulted in the loss of much of the empire for a time.
-The economy collapsed as a result of high inflation and the loss of foreign trade.
Explanation:
B would be the answer to your question
Why
He showed because he had changed the era of using lamps and to use light bulbs he and his fellow scientist.
I hope it helps :D
