Which one of these goods was most valuable to tribes that looked to expand their power and influence in the region?
A. Weapons
B. Manufactured goods
C. Rum
D. None of it was helpful

Weapons.

Explanation:

They needed defense, and the weapons also gave them control. When the slave trade was banned in the Americas and Europe, the African kingdoms whose businesses had come to govern collapsed, leaving them open to conquering and colonization. And the enhanced conflict and influx of European weapons fueled warfare and uncertainty that continues to this day. The Atlantic slave trade also added to the growth of racist philosophy.