What was the starting point and ending point of the middle passage?

The Middle Passage was the stage of the triangular trade in which millions of Africans were shipped to the New World as part of the Atlantic slave trade. Ships departed Europe for African markets with manufactured goods, which were traded for purchased or kidnapped Africans, who were transported across the Atlantic as slaves; the slaves were then sold or traded for raw materials,which would be transported back to Europe to complete the voyage. Voyages on the Middle Passage were large financial undertakings, generally organized by companies or groups of investors rather than individuals

The “Middle Passage” was considered a time of in-betweenness for those being traded from Africa to America. The close quarters and intentional division of pre-established African communities by the ship crew motivated captive Africans to forge bonds of kinship which then created forced transatlantic communities.