What is an example of a secondary source?

A textbook analyzing primary sources is an example of a secondary source because it interprets, summarizes, or critiques information that originates from primary sources. Primary sources are original materials that provide direct evidence or firsthand accounts of events, such as documents, photographs, or interviews. In contrast, secondary sources like textbooks take that original information and offer context or analysis, often to provide insights or overviews.

This distinction is crucial in research and academic writing, as using secondary sources helps scholars build upon existing knowledge while also allowing for a broader interpretation of the subject matter. By analyzing primary sources, a textbook can synthesize findings and present them in a way that is accessible and informative for readers who may not wish to engage directly with the original data.