After the native American slaves ran out and died because of diseases, wars, and ill treatment the Spanish saw the Africans as a great replacement for the dead native Americans.
Because when the conquistadors, and cortes arrived, he brought 1 African slave over, which made the Spanish want to bring more over
The Jungle brought light to the harsh reality of the working and food conditions. The book helped the passage of many Federal food safety laws.
Mostly farming, lumbering, fishing, trading,etc. This required cheap labor, or slaves. They were required for the heavy work to be done quickly by demand.
Actually the answer is The affranchis and the slaves