Why was slave labor so important to the economy of the southern colonies? a. slaves provided much of the labor on plantations that grew cash crops. b. slaves provided much of the labor for southern industries such as ironworking. c. subsistence farmers struggled to grow enough food without the of slaves. d. the slave trade was the most profitable industry in the region..

Why was slave labor so important to the economy of the Southern colonies?

A. Slaves provided much of the labor on plantations that grew cash crops.

B. Slaves provided much of the labor for Southern industries such as ironworking.

C. Subsistence farmers struggled to grow enough food without the help of slaves.

D. The slave trade was the most profitable industry in the region.

A is the right answer.

where is the

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."