RECap QuEstion on pg 23

1]What are primary and secondary sources?
Primary sources are information by people who were involved or witnessed the events that happened.Secondary sources are records by people from the study of primary sources(evidence) or others which might not be true as they did not directly participate or witness the event.
2]How do historians mkae sure that their sources are reliable?
In order to make sure that their sources are reliable,they must gone through and passed the 3 Cs test(Credibility,Consistency and Corroboration).
3]Why and when is it necessary for historians to revise their interpretations of past events?
They revise their interpretations when there is new information found in research as it can make their sources more reliable if the information match the situation of the event.