There has always been slavery inside Africa.
(Sadly slavery is still in Africa today.)
Europeans sold goods that the kingdoms wanted.
The kingdoms kept pushing further and further into the interior.
This created a continuous cycle.
Whites were sold into slavery in Africa also.
(They were captured from barbery pirates in North Africa.)
D. Britain sold finished goods to the American colonies for slaves from its Caribbean colonies.
The Constitution. Checks and balances throughout, separation of power in article one two and three.
The main reason why the Spanish built the St. Augustine fort in Florida was "to protect their sea route to the Caribbean" since this was a crucial port for many engaged in trade within the Caribbean.
