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Answered

A radio broadcast from the day the Soviet Union launched Sputnik.

Primary source or Secondary source?​

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AkiAintScaredviz

✍It's Secondary Source.

  • Examples of secondary sources are scholarly or popular books and journal articles, histories, criticisms, reviews, commentaries, encyclopedias, and textbooks. Secondary sources describe, discuss, interpret, comment upon, analyze, evaluate, summarize, and process primary sources.