American colonists began to use african slaves primarily because

(a) the papacy created an edict calling for the use of african slaves in

catholic-controlled lands

(b) the african slaves were more accustomed to agriculture than the

native americans

(c) the native americans were decimated by european disease, while the

africans developed immunity

(d) the practice of indentured servitude was outlawed by the pope

(e) the european population was too limited to provide the needed labor