Not only west Africans were taken as slaves. West African slaves were just taken mostly to the Americas while slaves from the eastern and south African were taking eastwards. The black people in islands such as Madagascar, Mauritius, Seychelles, Reunion Island and other adjoining islands in the Indian ocean were mostly taken from eastern African. Let’s not forget the ones that were taken to Indian and still exist till date.
https://www.quora.com/Why-were-mostly-West-Africans-taken-for-slavery-Why-didnt-they-take-some-East-Africans-too-maybe-even-some-North
In the article African Music in 17th Century Jamaica, Richard Rath explains the how an English physician, Hans Sloane of the Royal Society discovered that the music played and instruments used by the slaves of Jamaica were similar to the sounds of African music.
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
The English and French also did not have a policy to enslave Indians based solely on their race. Most Indian slaves taken during the early colonial period were from “warring tribes” and often these slaves were sent to the Indies. There was no large class of Indians slaves. In what would become the USA, they represented very small numbers and enslavement of Indians was specifically outlawed by most colonies or states rather early in American history.
https://www.quora.com/Why-were-mostly-West-Africans-taken-for-slavery-Why-didnt-they-take-some-East-Africans-too-maybe-even-some-North
Maroon Culture and How it Came About. Maroons in Jamaica: An Account of Daily Life. Maroons: Violence and Confrontation with the Planters. Culture means many things, but we can all agree that how and where a person has been raised helps to define their way of life.
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
Jamaican planters used the term Koromanti was to refer to slaves purchased from the Akan region of West Africa, presently known as Ghana. In the earliest years of the British settlement the Koromantis were the most stubborn, and yet, the most respected.
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
This is one of the reasons the Maroons, the most independent and rebellious blacks in Jamaica, tended to come from the Koromanti, one of the most prized group of slaves in Jamaica. They used Obeah to make others, including planters, believe they had power.
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
This means that each day was assigned a particular name, and a baby was named according to which day of the week he or she was born. Akan day names predominated among the Maroons and other African people of Jamaica. For example, a baby born on Sunday was named Kwesi in Ghana and Quashie in Jamaica.
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
Slaves were taken from the whole of Africa, in fact the whole globe and still are, see Contemporary slavery -. But to answer your afrocentric question, the different empires each had their own established slave networks and infrastructure in Africa (logistics as has already been stated), see: Arab slave trade.
https://www.quora.com/Why-were-mostly-West-Africans-taken-for-slavery-Why-didnt-they-take-some-East-Africans-too-maybe-even-some-North
By doing this, they have found that many of the names used by the Maroons and even descendants of slaves today, come from Africa, and often from particular regions of Africa. One of the most recognizable African naming patterns in both North America and the Caribbean is the West African custom of day names..
http://scholar.library.miami.edu/slaves/Maroons/individual_essays/leanna.html
But to answer your afrocentric question, the different empires each had their own established slave networks and infrastructure in Africa (logistics as has already been stated), see: 1  Arab slave trade. 2  Barbary slave trade. 3  Slavery in the Ottoman Empire.
https://www.quora.com/Why-were-mostly-West-Africans-taken-for-slavery-Why-didnt-they-take-some-East-Africans-too-maybe-even-some-North
where were the jamaican slaves taken from
The Jamaican slaves were taken from the Akan region of West Africa, presently known as Ghana. The Jamaican planters used the term Koromanti was to refer to slaves purchased from the Akan region of West Africa, presently known as Ghana.