The slaves were emacipated
Answer:
Scholars writing about historical events, people, objects, or ideas produce secondary sources because they help explain new or different positions and ideas about primary sources. These secondary sources generally scholarly books, including textbooks, articles, encyclopedias, and anthologies.
Explanation:
The enslaved people in the Union during the Civil War fought in battle. These enslaved people often wanted to fight because the Union treated them better than the Confederacy.