Sure! Here are the best responses to fill in the blanks:
- Most of the major battles of the Civil War had taken place in the South.
- Cities, industries, and farms had to be rebuilt in this era known as Reconstruction.
- Men and women who had once been enslaved were known as freedmen (or freedpeople).
So the complete sentences would read:
"Most of the major battles of the Civil War had taken place in the South. Cities, industries, and farms had to be rebuilt in this era known as Reconstruction. Men and women who had once been enslaved were known as freedmen."