Final answer:
A secondary source is a written or created source that provides an interpretive account of an event after it has occurred.
Step-by-step explanation:
A secondary source is a written or created source that provides an interpretive account of an event after it has occurred. Examples of secondary sources include textbooks, plays, short stories, government documents, historical fiction, autobiographies, and interviews. These sources are important for providing context, analyzing and interpreting primary sources, and helping students form an understanding of past events.