Answer:
Letters, diaries, speeches, and photographs are examples of primary sources. Artifacts such as tools are also primary sources.
Explanation:
Other tools that historians use are secondary sources. They are written after a historical event by people who did not see the event.
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The m∠BAD would be C. 71.58<span>°. This is because of the theory of supplementary angles. </span>
Can you please rewrite the question correctly .