Answer:
The rise of a thriving domestic slave trade.
Explanation:
The Slavery Abolition Act was not completely directed to British North America. Its purpose was more intended to disassemble the huge plantation that was located in the tropical colonies of Great Britain, where enslaved people were often more numerous than white colonists. Africans located in British North America were rather isolated and less numerous. Anyways, it was evident that there was no effective way to cut with trade and that the abolition of foreign slave trade even incited domestic slave trade, giving slaves a higher value.