Recap Qns.

1)Primary sources are information provided by people who were involved in historical events or who witneesed teh events.
Secondary sources are the records of people who did not directly participate in or witness the events as they describe. These records are the results of the study and investigation of primary sources.

2)Historians make sure that the evidence are reliable by using the 3Cs - Corroboration, Consistency and Credibility tests.

3)New pieces of evidence are constanly being discovered. Such evidence can provide new ways of looking at the past, therefore historians have to be prepared to "update" and revise their views or interpretation of events as new evidence becomes avaliable.