Question

on southern __, large numbers of workers, usually enslaved africans, were required to perform forced labor.

factories
plantations
mills
road crews

Explanation:

In the southern regions (especially in historical contexts like the American South), plantations relied heavily on enslaved African labor for agricultural production (e.g., cash crops like cotton, tobacco). Factories, mills, and road crews were not the primary sites where large - scale enslaved labor for agricultural - based forced work was centered as plantations were.

Answer:

B. Plantations