How did the position of some west african tribes change as a result of the atlantic slave trade? a. they lost much of their wealth and power by organizing large-scale warfare against european slave merchants. b. they increased their wealth and power by trading slaves to europeans in exchange for weapons and other goods. c. they lost much of their wealth and power after european merchants intentionally traded them poor-quality goods. d. they increased their wealth and power by treating their own slaves as property, like slaves in the americas.