Context: In 1840, a British naval station established to suppress the African slave trade was based on the island, and between 1840 and 1849 over 15,000 freed slaves, known as "Liberated Africans", were landed there.

Question: Who established a naval station to cut down on African slave trade on the island in 1840?
Answer: British

Question: Between 1840 and 1849 how many freed slaves landed on the island?
Answer: over 15,000

Question: What were the freed slaves known as?
Answer: Liberated Africans