Initially, the slavery was not bound to any particular race with basically any prisoner of war being capable of being enslaved such as Native Americans, Europeans, and Africans all becoming enslaved. The idea of using Africans as slaves initially came from the Kingdom of Portugal which of whom worked the indigenous peoples of their islands to death and turned to West Africa to replace them. This lead to the rise of the Atlantic Slave Trade.
The Atlantic Slave Trade was an essential major economic boon for the colonies allowing plantations in the south to buy laborers to produce their cash crops, while merchants in the north bought slaves from the Kingdom of Portugal or took them from Africa themselves and then sold the slaves for a profit in the southern colonies. In total, around 389,000 American slaves were originally natives of Africa.
The conditions for the slaves were horrible, not only in the plantations but also during the journey to America. Known as the Middle Passage, the route linking West Africa to North America was most commonly used by merchant ships transporting dozens of