Final answer:
In the nineteenth century, slaves had a stronger connection to Africa compared to colonial slavery.
Step-by-step explanation:
A major difference between colonial slavery and nineteenth-century slavery was that in the nineteenth century, slaves had a stronger connection to Africa. This connection was a result of the Transatlantic Slave Trade being in operation during the colonial period, which involved the forced migration of enslaved Africans to the Americas. In the nineteenth century, as abolitionist movements gained momentum and slavery began to be abolished in different countries, there was a growing sense of African heritage and identity among enslaved individuals.