are a useful tool for focusing your thoughts as well as di

______ _______ are a useful tool for focusing your thoughts, as well as discovering what other think about the quality of other historians work.

Solution

Artifacts are a useful tool for focusing your thoughts, as well as discovering what other think about the quality of other historians work. A primary source is something written or created by a person who saw a historical event. Letters, diaries, speeches, and photographs are examples of primary sources. Artifacts such as tools are also primary sources. Other tools that historians use are secondary sources.