Bristol’s prosperity in the 18th century was built on the slave trade, a fact often overlooked today. The city’s involvement in exporting Africans to North America has left a lasting legacy, despite the lack of official monuments. Surprisingly, Bristol had a significant role in a slave trade that thrived in Britain centuries earlier, with merchants even selling English slaves to Ireland. The Norman Conquest brought about significant changes in attitudes towards slavery in England, eventually leading to its demise. The Norman rulers, originally known for their involvement in the medieval slave trade, ultimately played a part in the abolition of slavery in England.
https://www.historytoday.com/archive/normans-and-slavery-breaking-bonds