The labor of enslaved people was extremely important to the of Southern plantations.

The statement is true

Explanation:

The economy of the South was based on large plantations of cash crops such as cotton, tobacco, rice and indigo. In these large plantations, labor was based on enslaved African Americans who lived in harsh conditions, and were subject to brutal treatment.

They also had no civil or political rights, and were considered property. In some areas of the Deep South like lowland South Carolina, and the Mississippi Delta, the slaves heavily outnumbered the white americans.

world bank is the correct answer.