Yes, gold was and still is a very important resource inside of the world's economy. Back when Africa was still being slaved and pillaged these tribes would trade their enemy tribes for profit so they can have some type of export to offer when the (mainly) British/Americans would come back for more.
I don't think Kingdome's was the main cause and effect of the slavery problem, it mainly sourced from the economy around them, and the fact was it's cheaper to slave a person and feed them than to actually pay them.
Explanation:
If you look inside of the United Kingdom they had "child labor" where children from the ages of 7 (some times younger) and up were <u><em>paid</em></u> to work inside of some of the worst conditions in the world, but they were paid. Unlike the democratic and tribal countries at the time slaving people and noting paying them at all but with food to make them work more.
