What defines a secondary source?

A secondary source is defined as a document or recording that analyzes, interprets, or summarizes information from primary sources. It is created after the event has occurred and provides insight based on previous firsthand accounts or original documents. This type of source allows researchers to gain context, understand different perspectives, and study the implications of the original data without relying solely on firsthand accounts.

In contrast, firsthand accounts, personal journals, and observational notes are classified as primary sources since they represent direct evidence from the time or event in question.