Final answer:
A secondary source is a document or account that interprets or analyzes primary sources, which are firsthand accounts or original records of an event. It is commonly used in social studies to provide historical context and analysis.
Step-by-step explanation:
A secondary source is a document or account that is created by someone who did not directly witness or experience an event. Instead, a secondary source interprets or analyzes primary sources, which are firsthand accounts or original records of an event. In social studies, an example of a secondary source could be a history textbook that discusses the causes and effects of World War II, or a biography written about a famous historical figure.
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