A major event in the french revolution hapenned on july 14, 1789, when a mob stormed the bastille, a notorious prison in paris. How can historians today use primary sources to determine that this date is accurate?: A) Read french letters from the 1700s and search for references to the event's date. B) Ask french citizens who directly experienced the event to confirm the date. C) Examine a European history book popular in modern-day France. D)Check websites that can be edited by the public to determine a popular consensus