According to Equiano, how does being sold in the New World seem to differ from being sold in Africa from the book, The Interesting Narrative and Other Writings?

According to Equiano, being sold in Barbados is very different from being sold in Africa. In Africa, it seems that being sold was an individual transaction, almost like being adopted. In Barabados, Equiano and the other slaves are treated like animals, herded into a pen and sold at an auction. Selling slaves in the Americas seems much more dehumanizing.