Liberia
The Portuguese slave trade developed in africa because the remnants of the Portuguese army took up slave trading from Luanda towards the interior.
Arabian and African societies were involved in slave trading in Africa before Europeans. Arab merchants conducted a significant portion of the trans-Saharan slave trade, while African kingdoms such as the Kingdom of Benin and the Kingdom of Dahomey participated in capturing and selling slaves.
portugal
1st African slaves were taken from Africa to England by slave trader John Lok-in 1555-also John Hawkins was also invloved in slave trading in the 1500
The slave trade was established in 1619 by Jamestown colonist due to a need of workers.
In what location was slave trading outlawed by the Compromise of 1850?
Portugal was the first nation to both start and end their slave trading.
Africa is a continent and to provide information we need a particular country to answer.
We don’t know “what these efforts “ are that you are asking about. To answer a question we need a who, what, when, where, why or how question.
Africa is a continent so we need to know particular countries you want to know about.
In what location was slave trading outlawed by the Compromise of 1850?