During the century that followed Pax Romana, Rome had many leaders because men were fighting for power of the empire. This time period is know as "The Crisis of the Third Century ". It was during this time that the Roman Empire almost collapsed entirely because of several combined pressures including civil war, invasions, plague and economic depression.
Answer:
Aarchives and manuscript material.
Photographs, audio recordings, video recordings, films.
Journals, letters and diaries.
Speeches.
Scrapbooks.
Published books, newspapers and magazine clippings published at the time.
Government publications.
Oral histories.
Hey there!
The best answer for this seems like Choice A, or the first option.
Hope this helps, let me know if you need anything else. :)