Final answer:
A secondary source is written or created after an event has taken place, providing information from the perspective of someone who was not there.
Step-by-step explanation:
A secondary source is written or created after an event has taken place. It provides information about an event from the perspective of someone who was not there. Examples of secondary sources include a twentieth-century biography of an Egyptian pharaoh, a map drawn in the 1960s to identify battle sites of World War II, and a museum curator's blog post about the artistic achievements of the Ming dynasty.