Question

Secondary sources would be valuable to a historian in order to provide

Answer 1

A more thorough analysis of the impact on the history of an event is the right answer.

The Secondary sources are created when a historian employs primary sources to address a topic or to hold a research. In other words, the secondary sources serve as the evidence of someone who was not present at the time the event took place, for example, the books written by scholars, historians etc. Secondary sources are used by historians to provide a more thorough study of the impact of an event on history.