Liverpool and the Slave Trade
For those who want a more detailed and historically correct analysis of slave trade, I'd recommend they read " Liverpool, the Afican Slave Trade, and Abolition" edited by Anstey and Hair published 1989. ISBN 0 9503591 5 7
It's contents may surprise many. There's a very detailed chapter on the role of wealthy African intermediaries ( local kings, merchants etc) in gathering up slaves from the more interior areas for sale to the slave ship captains. So if Liverpool feels it has to apologise for the slave trade, it's clear others should too.