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Slavery in Great Britain existed and was recognised from before the Roman occupation until the 12th century, when chattel slavery disappeared, at least for a time, after the Norman Conquest. Former slaves merged into the larger body of serfs in Britain and no longer were recognized separately in law or custom.

From the 17th century into the 19th century, transportation to the colonies as a criminal or an indentured servant served as punishment for both serious and petty crimes, or for simply being poor and viewed as an 'undesirable', facilitated by the Transportation Act of 1717. During the same period, workhouses employed people whose poverty left them no other alternative than to work under forced labour conditions.

International slave trade