How was early slave trade in west africa differ from that of east africa?

The East African slave trade involved fewer countries than the West African slave trade. In the East African slave trade, East Africans of some port cities of a few countries were taken (tricked sometimes) by Arabs from Oman and a few other places, and were sold to other East Africans in other countries. Very few were actually taken out of Africa. These slaves kept their identity and culture throughout slavery unlike what happened in the Trans-Atlantic Slave Trade.