The slave trade had devastating effects in Africa. Economic incentives for warlords and tribes to engage in the slave trade promoted an atmosphere of lawlessness and violence. Depopulation and a continuing fear of captivity made economic and agricultural development almost impossible throughout much of western Africa.
Assuming this is referring to the same chart that was posted before with this question, the proper answer is "<span>B.The role of women expanded during the twentieth century"</span>
