Mixed Commission Courts were set up right after slavery was abolished by the British and others. Their functions were to seize illegal slave ships and in many cases, free the Africans on board, usually before they were ever slaves. Many of them were native West Africans. These liberated Africans usually established settlements wherever they were freed since they couldn’t find their way back. These Courts were set up in Cuba, Brazil, Sierra Leone, and Suriname.
In Sierra Leone, between 1808 and 1864, over 78,000 Africans were emancipated in the court.